Oregon
Resource Information
The place Oregon represents a specific geographic location related to resources found in Bates College.
The Resource
Oregon
Resource Information
The place Oregon represents a specific geographic location related to resources found in Bates College.
- Label
- Oregon
A sample of Items that are about the Place Oregon See All
3 Items published in the Place Oregon
Context
Context of OregonFocus of
No resources found
No enriched resources found
- Oregon -- Antiquities
- Oregon -- Antiquities
- Oregon -- Archival resources
- Oregon -- Baker County
- Oregon -- Bibliography | Catalogs
- Oregon -- Biography
- Oregon -- Biography
- Oregon -- Boundaries -- Speeches in Congress
- Oregon -- Brookings
- Oregon -- Bull Run River Watershed
- Oregon -- Cape Blanco
- Oregon -- Centennial celebrations, etc
- Oregon -- Chetco River
- Oregon -- Church history
- Oregon -- Clackamas River
- Oregon -- Climate
- Oregon -- Columbia County
- Oregon -- Commerce
- Oregon -- Constitution
- Oregon -- Crater Lake National Park
- Oregon -- Crooked River Ranch
- Oregon -- Description and travel
- Oregon -- Description and travel
- Oregon -- Description and travel -- Fiction
- Oregon -- Description and travel -- Guidebooks
- Oregon -- Diamond Lake (Douglas County : Lake)
- Oregon -- Discovery and exploration
- Oregon -- Discovery and exploration
- Oregon -- Economic conditions
- Oregon -- Economic conditions
- Oregon -- Economic conditions -- Periodicals
- Oregon -- Education of women
- Oregon -- Emigration and immigration
- Oregon -- Environmental conditions | History
- Oregon -- Ethnic relations | History -- 19th century
- Oregon -- Fiction
- Oregon -- Fonds d'archives
- Oregon -- Genealogy
- Oregon -- Genealogy | Indexes
- Oregon -- Geology
- Oregon -- Grand Ronde Indian Reservation
- Oregon -- Grant County
- Oregon -- Guidebooks
- Oregon -- Guidebooks
- Oregon -- History
- Oregon -- History
- Oregon -- History -- 1859-
- Oregon -- History -- Periodicals
- Oregon -- History -- Sources
- Oregon -- History -- Sources
- Oregon -- History -- To 1846
- Oregon -- History -- To 1859 -- Speeches in Congress
- Oregon -- History | Sources
- Oregon -- History, Local -- Periodicals
- Oregon -- History, Military -- 20th century -- Juvenile literature
- Oregon -- Hood River Watershed
- Oregon -- In art | Exhibitions
- Oregon -- Intellectual life
- Oregon -- Johnson Creek (Clackamas County and Multnomah County)
- Oregon -- Klamath Basin
- Oregon -- Klamath Falls Region
- Oregon -- Lake Abert
- Oregon -- Lake County
- Oregon -- Lane County
- Oregon -- Literary collections
- Oregon -- Malheur National Wildlife Refuge
- Oregon -- Maps
- Oregon -- Maps | Bibliography | Catalogs
- Oregon -- McKenzie River
- Oregon -- Medford Region
- Oregon -- Meek's Cutoff
- Oregon -- Molalla River
- Oregon -- Mosier
- Oregon -- Mount Jefferson
- Oregon -- Mount Jefferson Wilderness
- Oregon -- Newberry Volcano Region
- Oregon -- Newspapers
- Oregon -- Opal Creek Forest Preserve
- Oregon -- Pictorial works
- Oregon -- Pictorial works
- Oregon -- Poetry
- Oregon -- Politics and government
- Oregon -- Politics and government -- 1859-1950
- Oregon -- Politics and government -- 1951-
- Oregon -- Population -- Statistics
- Oregon -- Portland
- Oregon -- Public lands
- Oregon -- Public lands | Recreational use
- Oregon -- Race relations
- Oregon -- Rogue River Watershed (Klamath County-Curry County)
- Oregon -- Salem
- Oregon -- Social life and customs
- Oregon -- Social life and customs
- Oregon -- Songs and music
- Oregon -- Sprague River Watershed
- Oregon -- Statistics
- Oregon -- Statistics -- Periodicals
- Oregon -- Summer Lake (Lake)
- Oregon -- Three Sisters Wilderness
- Oregon -- Trials, litigation, etc
- Oregon -- Tualatin River
- Oregon -- Umpqua River
- Oregon -- Union County
- Oregon -- Upper Klamath Lake
- Oregon
- Oregon -- Wapato Lake Bed
- Oregon -- Warm Springs Indian Reservation
- Oregon -- Warner Valley
- Oregon -- Washington County
- Oregon -- Willamette River
- Oregon -- Willamette River Valley
- Oregon -- Willamette River Watershed
- Oregon -- Williamson River
- Oregon -- Upper Klamath Lake Watershed
- Oregon
- Oregon
- Oregon
- Oregon
- Oregon -- Adult education
- Oregon -- Alsea River Watershed
Subfocus of
No resources found
No enriched resources found
- 20th century, Women, White -- Crimes against -- Oregon | Willamette River Valley -- History
- Academic achievement -- Oregon -- Statistics
- Academic-industrial collaboration -- Oregon
- Adoption -- Government policy -- Oregon
- Adoption -- Law and legislation -- Oregon
- Adoption -- Oregon -- Planning
- Adoption -- Planification -- Oregon
- African American families -- Oregon | Portland -- Biography
- African American men -- Oregon | Portland -- Biography
- African American newspapers -- Oregon
- African American railroad employees -- Oregon | Willamette River Valley -- Social conditions -- 20th century
- African Americans -- Civil rights -- Oregon | Willamette River Valley -- History -- 20th century
- African Americans -- Oregon | Portland -- Biography
- African Americans -- Oregon | Portland -- History -- 20th century
- African Americans -- Oregon | Portland -- Newspapers
- African Americans -- Oregon | Portland -- Social conditions -- 20th century
- African Americans -- Politics and government -- Oregon | Portland
- Agricultural industries -- Environmental aspects -- Oregon | Klamath Lake
- Agricultural laborers -- Oregon
- Agricultural pollution -- Environmental aspects -- Oregon | Hood River Watershed
- Agricultural pollution -- Oregon | McKenzie River
- Agricultural subsidies -- Oregon
- Agriculture -- Oregon -- Periodicals
- Agriculture and state -- Oregon
- Air -- Pollution -- Oregon | Portland
- Air pilots -- Training of -- Oregon | Bend
- Air quality management -- Oregon | Portland
- Air-compressors -- Oregon | Coburg
- Algae -- Oregon | North Umpqua River Watershed
- Algae -- Oregon | North Umpqua River Watershed
- Algal blooms -- Oregon | Agency Lake
- Algal blooms -- Oregon | Morrow County
- Algal blooms -- Oregon | Tualatin River
- Algal blooms -- Oregon | Upper Klamath Lake
- Algal blooms -- Oregon | Wapato Lake Bed
- Alluvium -- Oregon | Alsea River Watershed
- Amateur journalism -- Oregon | Portland -- Periodicals
- American literature -- Oregon -- 21st century -- Periodicals
- American poetry -- Oregon -- 21st century
- Ammonoidea -- Oregon
- Anabaena -- Oregon | Tualatin River
- Anabaena -- Oregon | Wapato Lake Bed
- Anthropological linguistics -- Oregon | Coos Bay -- History
- Antisemitism -- Oregon | Portland
- Aphanizomenon -- Oregon | Upper Klamath Lake
- Aphanizomenon -- Vertical distribution -- Oregon | Upper Klamath Lake
- Aquatic ecology -- Oregon | Willamette River Watershed
- Aquatic habitats -- Oregon | Willamette River Watershed
- Aquatic organisms -- Oregon | Willamette River Watershed
- Aquatic resources -- Oregon
- Aquifers -- Oregon | Mosier
- Aquifers -- Oregon | Willamette River Valley
- Aquifers -- Oregon | Willamette River Valley Region
- Archaeology -- Oregon
- Architecture -- Oregon -- History -- 20th century
- Archives -- Oregon
- Archives publiques -- Oregon
- Arsenic -- Environmental aspects -- Oregon | Willamette River Region
- Art -- Oregon | Corvallis -- Exhibitions
- Art -- Oregon | Portland -- Catalogs
- Art -- Oregon | Portland -- Exhibitions
- Art -- Private collections -- Oregon | Portland -- Exhibitions
- Art, American -- Oregon | Portland -- Exhibitions
- Artificial groundwater recharge -- Oregon
- Artists -- Oregon -- Biography
- Artists -- Oregon -- History -- 20th century
- Artists' models -- Oregon | Portland -- Attitudes
- Artists' models -- Oregon | Portland -- Attitudes
- Arts -- Oregon -- History -- 20th century
- Assisted suicide -- Oregon
- Assisted suicide -- Oregon
- Astragalus (Plants) -- Oregon | Klamath Basin
- Authors, American -- Oregon -- History -- 20th century
- Automobiles -- Inspection -- Oregon | Portland
- Automobiles -- Motors | Exhaust gas -- Oregon | Portland
- Automobiles -- Motors | Exhaust gas -- Oregon | Portland -- Measurement
- Automobiles -- Oregon | Portland -- Maintenance and repair
- Banks and banking -- Oregon | Portland -- Management
- Bar associations -- Oregon -- Periodicals
- Basketball coaches -- Oregon
- Beaches -- Oregon | Clatsop County
- Biodiversity conservation -- Oregon
- Biological monitoring -- Oregon | Morrow County
- Biotechnology industries -- Oregon | Portland
- Biotic communities -- Oregon -- Maps
- Bird populations -- Oregon -- Periodicals
- Bird watching -- Oregon -- Periodicals
- Birding sites -- Oregon | Pacific Coast -- Guidebooks
- Birding sites -- Oregon | Pacific Coast -- Guidebooks
- Birds -- Behavior -- Oregon
- Birds -- Oregon -- Geographical distribution
- Birds -- Oregon -- Periodicals
- Birth certificates -- Political aspects -- Oregon
- Bombing, Aerial -- Oregon -- Juvenile literature
- Botany -- Oregon
- Botany -- Oregon
- Bryophytes -- Oregon | Crater Lake -- Maps
- Buffer zones (Ecosystem management) -- Oregon
- Buildings -- Remodeling for other use -- Oregon
- Buildings -- Salvaging -- Oregon
- Business enterprises -- Oregon -- Periodicals
- Business enterprises -- Oregon | Portland -- Periodicals
- Cable cars (Streetcars) -- Oregon | Portland
- Calcium magnesium acetate -- Environmental aspects -- Oregon | Clackamas County
- Camp sites, facilities, etc -- Oregon | Douglas County
- Camp sites, facilities, etc. -- Law and legislation -- Oregon | Douglas County
- Capital budget -- Oregon
- Captive elephants -- Oregon | Portland -- Pictorial works
- Carbon -- Oregon | Tualatin River
- Catholic schools -- Oregon | Portland -- History -- 20th century
- Caves -- Oregon
- Caves -- Oregon
- Chemical weapons disposal -- Oregon | Umatilla -- Safety measures
- Child labor -- Oregon
- Child labor -- Oregon
- Child welfare -- Oregon
- Children of agricultural laborers -- Oregon
- Children of agricultural laborers -- Oregon
- Children of unemployed parents -- Oregon -- Biography
- Children's diaries, American -- Oregon
- Children's periodicals, American -- Oregon
- Children's writings, American -- Oregon
- Chinese Americans -- Oregon -- History -- 19th century
- Chinese Americans -- Oregon | John Day -- Biography
- Chinese Americans -- Oregon | Portland -- History
- Chinese Americans -- Oregon | Portland -- Social conditions
- Chinook salmon fisheries -- Oregon
- Chlorophenoxyacetic acid -- Toxicology -- Oregon
- Chromite -- Oregon
- City planning -- Oregon | Portland
- City planning -- Oregon | Portland
- Clay -- Oregon | Lane County
- Clay -- Oregon | Santiam River Watershed
- Clean energy industries -- Economic aspects -- Oregon
- Clean energy industries -- Economic aspects -- Oregon
- Clearcutting -- Environmental aspects -- Oregon
- Clearcutting -- Environmental aspects -- Oregon
- Clerks -- Oregon
- Coal -- Oregon
- Coal mines and mining -- Oregon
- Coast changes -- Oregon
- Coast changes -- Oregon | Clatsop County
- College sports -- Corrupt practices -- Oregon
- College sports -- Social aspects -- Oregon
- Color prints -- Oregon | Portland -- Exhibitions
- Communal living -- Oregon -- Biography
- Communities -- Oregon | Corbett
- Community banks -- Oregon | Portland -- Management
- Community colleges -- Oregon | Bend
- Community development -- Oregon | Grant County -- History
- Community development -- Oregon | Long Creek Region -- History
- Community development, Urban -- Oregon | Portland -- Finance
- Computer-assisted instruction -- Oregon -- Periodicals
- Concrete dams -- Thermal properties -- Oregon | Santiam River
- Conscientious objectors -- Oregon | Waldport -- History -- 20th century
- Conservation easements -- Oregon | Mount Hood Wilderness
- Conservatorships -- Oregon
- Contaminated sediments -- Oregon | Salem Region
- Continental shelf -- Oregon
- Copper mines and mining -- Oregon
- Coquille language -- Oregon | Coos Bay -- History
- Country life -- Oregon
- Country life -- Oregon -- Anecdotes
- Courthouses -- Oregon | Eugene
- Cowboys -- Oregon -- Fiction
- Coyote -- Control -- Oregon | Klamath County -- 1947-
- Criminal behavior -- Oregon | Portland
- Criminal investigation -- Oregon -- Case studies
- Criminal investigation -- Oregon | Portland
- Criminals -- Family relationships -- Oregon -- Case studies
- Criminals -- Oregon
- Criminals -- Oregon -- Case studies
- Criminals -- Oregon | Portland
- Crinoidea, Fossil -- Oregon
- Crops and climate -- Oregon
- Cults -- Oregon
- Cultural landscapes -- Oregon | Crater Lake National Park
- Cutthroat trout -- Oregon
- Cyanobacterial blooms -- Oregon | Morrow County
- Cyanobacterial blooms -- Oregon | Upper Klamath Lake
- Cyanobacterial toxins -- Oregon | Upper Klamath Lake
- Dam retirement -- Oregon | Sandy River
- Dam safety -- Oregon | Santiam River, North Fork
- Dams -- Environmental aspects -- Oregon | McKenzie River Watershed
- Dams -- Environmental aspects -- Oregon | Willamette River
- Dams -- Law and legislation -- Oregon
- Dams -- Models -- Oregon | Santiam River
- Dams -- Oregon
- Dams -- Oregon | Santiam River
- Dams -- Oregon | Santiam River -- Design and construction
- Debris avalanches -- Oregon | Jefferson, Mount
- Debris avalanches -- Oregon | Mount Jefferson Wilderness
- Debris avalanches -- Oregon | Three Sisters Wilderness
- Detritus -- Oregon | Tualatin River
- Dioxins -- Environmental aspects -- Oregon | Willamette River Watershed
- Disasters -- Oregon
- Discrimination in employment -- Oregon
- Dolomite -- Oregon
- Douglas fir -- Ecology -- Oregon | Saddle Bag Mountain Region
- Douglas fir -- Ecology -- Oregon | Saddle Bag Mountain Region
- Douglas fir -- Oregon
- Dredging -- Environmental aspects -- Oregon | Willamette River
- Drinking water -- Oregon | Clackamas River
- Drinking water -- Oregon | McKenzie River
- Drug abuse -- Oregon | Multnomah County -- Statistics
- Drug abuse -- Treatment -- Oregon | Multnomah County -- Statistics
- Drug control -- Oregon
- Drug control -- Oregon
- Drug courts -- Oregon | Multnomah County -- Cost effectiveness
- Drug courts -- Oregon | Multnomah County -- Statistics
- Drug traffic -- Oregon
- Drug traffic -- Oregon
- Drugs of abuse -- Law and legislation -- Oregon
- Dungeness crab -- Oregon
- Dwellings -- Insulation -- Oregon
- Earth sciences -- Research -- Oregon
- Earthquake engineering -- Oregon
- Earthquake engineering -- Oregon
- East Indian Americans -- Oregon -- Biography
- Ecology -- Oregon -- Maps
- Economic forecasting -- Oregon -- Periodicals
- Ecosystem management -- Law and legislation -- Oregon
- Ecosystem management -- Oregon
- Ecosystem management -- Oregon | Deschutes River -- Finance
- Ecosystem management -- Oregon | Willamette River
- Education -- Oregon -- Finance
- Education and state -- Oregon
- Educational innovations -- Oregon
- Educational leadership -- Oregon | West Linn
- Election districts -- Oregon -- Statistics | Periodicals
- Elections -- Oregon
- Elections -- Oregon | Washington County -- History -- 19th century
- Electronic funds transfers -- Oregon
- Elk -- Ecology -- Oregon
- Elk -- Nutrition -- Oregon
- Emergency management -- Oregon | Umatilla
- Endangered ecosystems -- Oregon
- Endangered plants -- Habitat | Conservation -- Oregon | Willamette River Valley
- Endangered plants -- Habitat | Conservation -- Oregon | Willamette River Valley
- Endangered plants -- Oregon
- Endangered plants -- Oregon
- Endangered plants -- Oregon | Klamath Basin
- Endangered species -- Habitat | Conservation -- Oregon | Willamette River Valley
- Endangered species -- Habitat | Conservation -- Oregon | Willamette River Valley
- Endangered species -- Law and legislation -- Oregon
- Endangered species -- Oregon
- Endemic plants -- Oregon | Klamath Basin
- Endowments -- Oregon
- Environmental impact analysis -- Oregon
- Environmental impact analysis -- Oregon
- Environmental impact analysis -- Oregon | Willamette River
- Environmental policy -- Oregon
- Environmental policy -- Oregon
- Environmentalism -- Oregon
- Environmentalism -- Oregon
- Environmentalists -- Oregon -- Attitudes
- Episcopal Church -- Oregon
- Erosion -- Oregon | Santiam River Watershed
- Erosion -- Oregon | Willamette River Watershed
- Escherichia coli -- Environmental aspects -- Oregon | Fanno Creek (Washington County)
- Escherichia coli -- Environmental aspects -- Oregon | Tualatin River Watershed
- Ethiopian Americans -- Crimes against -- Oregon | Portland -- Case studies
- Eutrophication -- Oregon
- Eutrophication -- Oregon | Clackamas River Watershed
- Eutrophication -- Oregon | Diamond Lake (Douglas County : Lake)
- Eutrophication -- Oregon | Klamath Lake
- Eutrophication -- Oregon | Willamette River
- Evapotranspiration -- Oregon | Upper Klamath Lake
- Excavations (Archaeology) -- Oregon | Hart Mountain National Antelope Refuge
- Excavations (Archaeology) -- Oregon | Newberry Volcano Region
- Families -- Oregon -- Case studies
- Farm life -- Oregon
- Farm life -- Oregon | Jacksonville
- Farm life -- Oregon | Willamette River Valley
- Farm life -- Oregon | Willamette River Valley -- History -- 19th century
- Faults (Geology) -- Oregon
- Faults (Geology) -- Oregon | Oregon Coast Range
- Federal aid to research -- Oregon | Portland
- Federal aid to water resources development -- Oregon | Hermiston
- Feminism -- Oregon | Eugene -- Periodicals
- Fire prevention -- Law and legislation -- Oregon | Crooked River Ranch
- Firearms -- Law and legislation -- Oregon -- Criminal provisions
- Fish culture -- Oregon | Umatilla River Watershed -- Evaluation
- Fish habitat improvement -- Oregon
- Fish habitat improvement -- Oregon | Umatilla River Watershed -- Evaluation
- Fish hatcheries -- Oregon
- Fish hatcheries -- Oregon -- Planning
- Fish management areas -- Oregon
- Fisheries -- Oregon
- Fishery law and legislation -- Oregon
- Fishery law and legislation -- Oregon
- Fishery law and legislation -- Oregon | Celilo
- Fishery management -- Oregon
- Fishery management -- Oregon -- Periodicals
- Fishes -- Conservation -- Oregon -- Periodicals
- Fishes -- Effect of chemicals on -- Oregon | Willamette River Watershed
- Fishes -- Effect of dams on -- Oregon
- Fishes -- Effect of dams on -- Oregon | Santiam River
- Fishes -- Habitat -- Oregon
- Fishes -- Habitat -- Oregon | Willamette River
- Fishes -- Oregon
- Fishways -- Oregon
- Fishways -- Oregon | Sprague River
- Floodplain management -- Oregon | Willamette River
- Floodplain morphology -- Oregon | Klamath Basin
- Floodplain morphology -- Oregon | Sprague River Watershed
- Floodplain plants -- Oregon | Klamath Basin
- Floodplain plants -- Oregon | Sprague River Watershed
- Floods -- Oregon | Jefferson, Mount
- Floods -- Oregon | Willamette River
- Fluvial geomorphology -- Oregon | Molalla River
- Food relief -- Oregon | Washington County
- Food stamp fraud -- Oregon -- Prevention
- Food stamps -- Oregon -- Automation
- Forest biodiversity -- Oregon
- Forest conservation -- Law and legislation -- Oregon
- Forest dynamics -- Oregon | H.J. Andrews Experimental Forest
- Forest ecology -- Oregon
- Forest ecology -- Oregon
- Forest ecology -- Oregon | Coos County
- Forest ecology -- Oregon | Douglas County
- Forest ecology -- Oregon | H.J. Andrews Experimental Forest
- Forest ecology -- Oregon | Saddle Bag Mountain Region
- Forest ecology -- Oregon | Saddle Bag Mountain Region
- Forest fires -- Environmental aspects -- Oregon | Malheur National Forest
- Forest fires -- Oregon
- Forest fires -- Oregon | Tillamook State Forest -- History
- Forest management -- Law and legislation -- Oregon
- Forest management -- Law and legislation -- Oregon
- Forest management -- Oregon
- Forest management -- Oregon
- Forest management -- Oregon | Malheur National Forest
- Forest reserves -- Law and legislation -- Oregon
- Forest reserves -- Law and legislation -- Oregon
- Forest reserves -- Oregon -- Management
- Forest restoration -- Oregon
- Forest thinning -- Oregon
- Forest thinning -- Oregon
- Forests and forestry -- Economic aspects -- Oregon
- Forests and forestry -- Environmental aspects -- Oregon
- Forests and forestry -- Environmental aspects -- Oregon | Rogue River Valley
- Forests and forestry -- Oregon
- Formations (Geology) -- Oregon
- Foster children -- Oregon -- Case studies
- Foster home care -- Oregon -- Case studies
- Foyers nourriciers -- Oregon -- Cas, Études de
- Fragmented landscapes -- Oregon
- Freshwater algae -- Oregon | Clackamas River Watershed
- Freshwater algae -- Oregon | Willamette River
- Freshwater biology -- Research -- Oregon | Crater Lake
- Freshwater ecology -- Oregon | Klamath Basin
- Freshwater ecology -- Oregon | Malheur County
- Freshwater habitats -- Oregon | Molalla River
- Freshwater organisms -- Oregon | Molalla River
- Frontier and pioneer life -- Oregon
- Frontier and pioneer life -- Oregon
- Frontier and pioneer life -- Oregon -- Fiction
- Frontier and pioneer life -- Oregon | Grant County
- Frontier and pioneer life -- Oregon | Long Creek Region
- Frontier and pioneer life -- Oregon | Westlake -- Anecdotes
- Frontier and pioneer life -- Oregon | Willamette River Valley
- Fuel reduction (Wildfire prevention) -- Oregon
- Fur trade -- Oregon
- Fur trade -- Oregon
- Fur trade -- Oregon -- History -- 19th century
- Furans -- Environmental aspects -- Oregon | Willamette River Watershed
- Gabbro -- Oregon
- Gangs -- Oregon | Portland
- Gardens -- Oregon -- Guidebooks
- Gay liberation movement -- Oregon
- Gay men -- Oregon | Portland -- History
- Gay men -- Oregon | Portland -- History
- Gay rights -- Oregon
- Gay rights -- Oregon
- Gays -- Oregon
- Gays -- Oregon
- Geochemical prospecting -- Oregon
- Geochemical prospecting -- Oregon
- Geological mapping -- Oregon
- Geology -- Oregon
- Geology -- Oregon
- Geology -- Oregon -- Bibliography | Catalogs
- Geology -- Oregon -- Databases
- Geology -- Oregon -- Guidebooks
- Geology -- Oregon -- Maps
- Geology -- Oregon | Baker County
- Geology -- Oregon | Crater Lake National Park
- Geology -- Oregon | Grant County
- Geology -- Oregon | Hood, Mount -- Guidebooks
- Geology -- Oregon | Lake County
- Geology -- Oregon | Medford Region
- Geology -- Oregon | Rogue River Watershed (Klamath County-Curry County)
- Geology -- Oregon | Union County
- Geology -- Oregon | Wallowa Mountains Region
- Geology -- Oregon | Willamette River Valley
- Geology, Stratigraphic -- Oregon | Newberry Volcano Region -- Holocene
- Geology, Structural -- Oregon | Oregon Coast Range
- Geomagnetism -- Oregon -- Maps
- Geomorphology -- Oregon | Klamath Basin
- Geomorphology -- Oregon | Sprague River Watershed
- Geothermal resources -- Oregon | Klamath Falls Region
- Geothermal resources -- Oregon | Newberry Volcano
- Geothermal resources -- Oregon | Newberry Volcano Region
- Geothermal resources -- Oregon | Warner Valley
- Girls -- Oregon -- Biography
- Goat farming -- Oregon | Jacksonville
- Goats -- Oregon -- Anecdotes
- Gold -- Oregon
- Gold mines and mining -- Oregon
- Gold ores -- Oregon
- Governors -- Oregon -- Biography
- Granite -- Oregon
- Gravity -- Oregon -- Maps
- Green movement -- Oregon | Rogue River Valley
- Groundfish fisheries -- Oregon
- Groundwater -- Health aspects -- Oregon | Upper Klamath Lake
- Groundwater -- Microbiology -- Oregon | Upper Klamath Lake
- Groundwater -- Nitrogen content -- Oregon | Umatilla
- Groundwater -- Oregon
- Groundwater -- Oregon | Clackamas River
- Groundwater -- Oregon | Fort Rock Basin
- Groundwater -- Oregon | Klamath Falls Region
- Groundwater -- Oregon | Lake County
- Groundwater -- Oregon | Portland
- Groundwater -- Oregon | Portland Region
- Groundwater -- Oregon | Upper Klamath Lake Watershed
- Groundwater -- Oregon | Upper Klamath Lake Watershed -- Computer simulation
- Groundwater -- Oregon | Upper Klamath Lake Watershed -- Management
- Groundwater -- Oregon | Warner Valley
- Groundwater -- Oregon | Willamette River Valley
- Groundwater -- Oregon | Willamette River Valley Region
- Groundwater -- Oregon | Willamette River Watershed
- Groundwater -- Pollution -- Oregon | La Pine
- Groundwater -- Pollution -- Oregon | Willamette River Region
- Groundwater -- Quality -- Oregon | Upper Klamath Lake
- Groundwater -- Research | Law and legislation -- Oregon
- Groundwater ecology -- Oregon | Upper Klamath Lake
- Groundwater flow -- Oregon | Deschutes River Watershed
- Groundwater flow -- Oregon | Deschutes River Watershed -- Mathematical models
- Groundwater flow -- Oregon | La Pine
- Groundwater flow -- Oregon | Umatilla
- Groundwater flow -- Oregon | Upper Klamath Lake
- Groundwater flow -- Oregon | Willamette River Watershed
- Groundwater flow -- Oregon | Willamette River Watershed
- Groundwater recharge -- Oregon | Mosier
- Habitat conservation -- Oregon | Coos County -- Planning
- Habitat conservation -- Oregon | Willamette River Valley
- Habitat conservation -- Oregon | Willamette River Valley
- Harbors -- Security measures -- Oregon
- Hate crimes -- Oregon
- Hate crimes -- Oregon | Portland
- Hazardous geographic environments -- Oregon
- Hazardous substances -- Oregon | Portland -- Measurement
- Hazardous waste site remediation -- Oregon
- Hazardous waste site remediation -- Oregon
- Hazardous waste sites -- Oregon
- Healers -- Oregon | John Day -- Biography
- Health care reform -- Oregon
- Health insurance -- Oregon
- Health services accessibility -- Oregon
- Heat -- Transmission -- Oregon | Upper Klamath Lake
- Herbicides -- Environmental aspects -- Oregon
- Herbicides -- Environmental aspects -- Oregon | Willamette River Valley
- Herbicides -- Oregon
- Herbicides -- Toxicology -- Oregon
- High school student activities -- Oregon | Salem -- Drama
- High technology industries -- Oregon | Portland Region -- History
- Hippies -- Oregon -- Social life and customs -- 20th century
- Historic sites -- Law and legislation -- Oregon
- Historic sites -- Law and legislation -- Oregon
- Historic sites -- Oregon | Oregon City
- Homeless families -- Oregon -- Case studies
- Homeless mothers -- Oregon -- Case studies
- Homeless women -- Oregon -- Case studies
- Homosexuality -- Law and legislation -- Oregon
- Homosexuality -- Oregon
- Homosexuality -- Oregon
- Hops industry -- Oregon | Willamette River Valley -- History
- Hours of labor -- Law and legislation -- Oregon
- Hours of labor -- Oregon
- Housing -- Oregon -- Statistics
- Human geography -- Oregon | Calapooia River Valley -- History -- 19th century
- Humanitarianism -- Oregon
- Humidity -- Oregon -- Observations
- Husband and wife -- Oregon
- Hybrid zones -- Oregon
- Hybrid zones -- Oregon
- Hydroelectric power plants -- Oregon
- Hydroelectric power plants -- Oregon
- Hydrogeological surveys -- Oregon
- Hydrogeological surveys -- Oregon
- Hydrogeology -- Oregon
- Hydrogeology -- Oregon | Bull Run River Watershed
- Hydrogeology -- Oregon | Deschutes River Watershed
- Hydrogeology -- Oregon | Santiam River, North Fork
- Hydrogeology -- Oregon | Willamette River
- Hydrogeology -- Oregon | Willamette River Watershed
- Hydrology -- Oregon
- Hydrology -- Oregon -- Indexes
- Hydrology -- Oregon | Abert, Lake
- Hydrology -- Oregon | Bull Run River Watershed
- Hydrology -- Oregon | Deschutes River Watershed
- Hydrology -- Oregon | Johnson Creek Watershed (Clackamas County and Multnomah County)
- Hydrology -- Oregon | Newberry Volcano
- Hydrology -- Oregon | Rogue River Watershed (Klamath County-Curry County)
- Hydrology -- Oregon | Summer Lake (Lake)
- Hydrology -- Oregon | Upper Klamath Lake Watershed
- Hydrology -- Oregon | Willamette River
- Hydrology -- Oregon | Willamette River Watershed
- Hydrology -- Oregon | Willamette River Watershed -- Maps
- Hydrology, Forest -- Oregon | Alsea River Watershed
- Hydrothermal alteration -- Oregon | Hood, Mount, Region
- Hydrothermal alteration -- Oregon | Newberry Volcano
- Hydrothermal alteration -- Oregon | Newberry Volcano Region
- Igneous rocks -- Oregon | Hood, Mount
- Immigrants -- Oregon -- Guidebooks
- Indian basketball players -- Oregon
- Indian land transfers -- Oregon
- Indian land transfers -- Oregon
- Indian reservations -- Oregon
- Indian school children -- Health and hygiene -- Oregon
- Indian women -- Oregon
- Indians of North America -- First contact with other peoples -- Oregon
- Indians of North America -- Fishing -- Oregon
- Indians of North America -- Fishing -- Oregon | Celilo
- Indians of North America -- Government relations -- Oregon | Celilo
- Indians of North America -- Hunting -- Oregon
- Indians of North America -- Land tenure -- Oregon
- Indians of North America -- Land tenure -- Oregon
- Indians of North America -- Land tenure -- Oregon | Celilo
- Indians of North America -- Legal status, laws, etc -- Oregon
- Indians of North America -- Legal status, laws, etc. -- Oregon
- Indians of North America -- Missions -- Oregon
- Indians of North America -- Missions -- Oregon
- Indians of North America -- Missions -- Oregon -- History -- 19th century
- Indians of North America -- Missions -- Oregon -- History -- 19th century
- Indians of North America -- Oregon
- Indians of North America -- Oregon
- Indians of North America -- Oregon -- Antiquities
- Indians of North America -- Oregon -- Folklore
- Indians of North America -- Oregon -- Government relations
- Indians of North America -- Oregon -- History
- Indians of North America -- Oregon -- History -- Sources
- Indians of North America -- Oregon -- Interviews
- Indians of North America -- Oregon -- Periodicals
- Indians of North America -- Oregon -- Treaties
- Indians of North America -- Oregon | Newberry Volcano Region -- Antiquities
- Indians of North America -- Oregon | Pacific Coast -- Antiquities
- Indians of North America -- Oregon | Warm Springs Indian Reservation
- Indians of North America -- Oregon | Warm Springs Indian Reservation -- Juvenile literature
- Indians of North America -- Relocation -- Oregon | Celilo
- Indians of North America -- Wars -- Oregon
- Indians, Treatment of -- Oregon
- Indians, Treatment of -- Oregon -- History -- Sources
- Industries -- Oregon -- Periodicals
- Infrastructure (Economics) -- Oregon
- Inorganic compounds -- Environmental aspects -- Oregon | Umpqua River
- Instream flow -- Oregon | Williamson River
- Intergenerational relations -- Oregon | Willamette River Valley -- History -- 19th century
- Intrusions (Geology) -- Oregon | Grant County
- Ionizing radiation -- Toxicology -- Oregon
- Ions -- Oregon | Steamboat Creek Watershed (Douglas County and Lane County)
- Irrigation canals and flumes -- Oregon
- Irrigation laws -- Oregon
- Irrigation laws -- Oregon
- Irrigation projects -- Oregon | Bend Feed Canal
- Irrigation projects -- Oregon | Tumalo Feed Canal
- Japanese American soldiers -- Oregon | Hood River -- Biography
- Japanese American soldiers -- Oregon | Hood River -- History -- 20th century
- Japanese Americans -- Oregon -- Biography
- Japanese Americans -- Oregon -- Ethnic identity
- Japanese Americans -- Oregon -- Social conditions
- Japanese Americans -- Oregon | Hood River Valley (River) -- History
- Jesuits -- Missions -- Oregon
- Jews -- Oregon -- History
- Jews -- Oregon | Portland -- History
- Jews -- Oregon | Portland -- History
- Job creation -- Oregon
- Job creation -- Oregon
- Judaism -- Oregon -- History
- Juvenile Breaking the Cycle (Program) -- Oregon | Lane County -- Evaluation
- Juvenile delinquency -- Oregon | Lane County -- Prevention
- Juvenile delinquents -- Drug testing -- Oregon | Lane County
- Juvenile delinquents -- Drug use -- Oregon | Lane County
- Juvenile delinquents -- Rehabilitation -- Oregon | Lane County
- Lake ecology -- Oregon | Klamath Lake
- Lake hydrology -- Oregon | Upper Klamath Lake
- Lake restoration -- Environmental aspects -- Oregon | North Umpqua River Watershed
- Lake restoration -- Oregon | Wapato Lake National Wildlife Refuge
- Lake sediments -- Oregon | Agency Lake
- Lake sediments -- Oregon | Upper Klamath Lake
- Lakes -- Circulation -- Oregon | Henry Hagg Lake -- Mathematical models
- Lakes -- Circulation -- Oregon | Upper Klamath Lake
- Lakes -- Fertilization -- Oregon
- Lampreys -- Conservation -- Oregon | Umatilla River
- Land settlement -- Oregon | Calapooia River Valley -- History -- 19th century
- Land titles -- Registration and transfer -- Oregon
- Land titles -- Registration and transfer -- Oregon
- Land titles -- Registration and transfer -- Oregon | Bend
- Land titles -- Registration and transfer -- Oregon | Cascade-Siskiyou National Monument
- Land titles -- Registration and transfer -- Oregon | Deschutes National Forest
- Land titles -- Registration and transfer -- Oregon | Douglas County
- Land titles -- Registration and transfer -- Oregon | Eugene
- Land titles -- Registration and transfer -- Oregon | Grand Ronde Indian Reservation
- Land titles -- Registration and transfer -- Oregon | Haines
- Land titles -- Registration and transfer -- Oregon | Hermiston
- Land titles -- Registration and transfer -- Oregon | La Pine
- Land titles -- Registration and transfer -- Oregon | Lake County
- Land titles -- Registration and transfer -- Oregon | Oregon City
- Land titles -- Registration and transfer -- Oregon | Sisters
- Land titles -- Registration and transfer -- Oregon | Wallowa
- Land trusts -- Oregon
- Land trusts -- Oregon
- Land use -- Law and legislation -- Oregon
- Land use -- Oregon
- Land use -- Oregon -- Planning
- Land use -- Oregon | Willamette River Watershed -- Planning
- Land use, Rural -- Law and legislation -- Oregon
- Landscape painting -- Oregon -- 20th century -- Exhibitions
- Landscape painting, American -- Oregon -- Exhibitions
- Landslides -- Oregon | Santiam River Watershed
- Laundry, Steam -- Oregon | Portland
- Law -- Oregon
- Law -- Oregon -- Periodicals
- Law enforcement -- Oregon | Portland
- Law reports, digests, etc -- Oregon
- Law reviews -- Oregon
- Legislators -- Oregon -- Directories
- Legumes -- Oregon | Klamath Basin
- Levees -- Oregon | Willamette River
- Librarians -- Oregon -- Periodicals
- Librarians -- Oregon | Portland
- Libraries -- Oregon -- Periodicals
- Limnology -- Oregon | Diamond Lake (Douglas County : Lake)
- Limnology -- Research -- Oregon | Crater Lake
- Linguistic informants -- Oregon | Coos Bay -- Biography
- Livestock farms -- Oregon | Jacksonville
- Living trusts -- Oregon
- Local transit -- Oregon | Portland
- Loggers -- Oregon -- Attitudes
- Loggers -- Oregon | Coos Bay -- History
- Logging -- Environmental aspects -- Oregon | Alsea River Watershed
- Logging -- Law and legislation -- Oregon
- Logging -- Oregon
- Logging -- Oregon | Coos Bay -- History
- Lost River sucker -- Habitat -- Oregon
- Lost River sucker -- Larvae -- Oregon | Upper Klamath Lake Watershed
- Lost River sucker -- Larvae -- Oregon | Williamson River
- Lost River sucker -- Larvae | Dispersal -- Oregon | Upper Klamath Lake
- Lost River sucker -- Larvae | Dispersal -- Oregon | Williamson River
- Lumber trade -- Oregon | Coos Bay -- History
- Lumbering -- Energy conservation -- Oregon | Coburg
- Magmatism -- Oregon -- Congresses
- Malicious prosecution -- Oregon
- Malvaceae -- Oregon
- Mammals -- Oregon
- Marine invertebrates -- Oregon -- Identification
- Marine sediments -- Oregon
- Marine terminals -- Security measures -- Oregon
- Married women -- Legal status, laws, etc. -- Oregon
- McLoughlin, John, 1784-1857 -- Homes and haunts -- Oregon | Oregon City
- Medicare -- Oregon
- Medicine, Chinese -- Oregon | John Day -- History
- Merchants -- Oregon | John Day -- Biography
- Mercury -- Environmental aspects -- Oregon
- Mercury -- Environmental aspects -- Oregon
- Meteorology, Agricultural -- Oregon
- Methamphetamine abuse -- Oregon -- Prevention
- Methamphetamine abuse -- Oregon -- Prevention
- Mexican American migrant agricultural laborers -- Oregon
- Mexican American migrant agricultural laborers -- Oregon
- Microcystins -- Oregon | Upper Klamath Lake
- Microcystis aeruginosa -- Oregon | Upper Klamath Lake
- Middle class -- Oregon | Portland
- Middle class -- Oregon | Portland
- Middle class -- Oregon | Portland -- History -- 20th century
- Middle class -- Oregon | Willamette River Valley -- History -- 19th century
- Military roads -- Oregon
- Mineral industries -- Oregon -- Newspapers
- Mineral lands -- Oregon
- Minerals -- Oregon | Newberry Volcano
- Minerals -- Oregon | Newberry Volcano Region
- Mines and mineral resources -- Oregon
- Mines and mineral resources -- Oregon
- Mines and mineral resources -- Oregon | Eagle Cap Wilderness
- Mines and mineral resources -- Oregon | Grant County
- Mines and mineral resources -- Oregon | Medford Region
- Minimum wage -- Law and legislation -- Oregon
- Minimum wage -- Oregon
- Minimum wage -- Oregon
- Minorities -- Education (Higher) -- Oregon | Eugene
- Minorities -- Oregon | Eugene
- Minority business enterprises -- Oregon | Portland -- Finance
- Mints -- Oregon -- Speeches in Congress
- Miscarriage -- Oregon
- Missions -- Oregon
- Missions -- Oregon
- Missions -- Oregon -- History -- 19th century
- Missions -- Oregon -- History -- 19th century
- Mollusks, Fossil -- Oregon
- Moraines -- Oregon | Mount Jefferson Wilderness
- Moraines -- Oregon | Three Sisters Wilderness
- Mormons -- Oregon -- Biography
- Motor vehicles -- Inspection -- Oregon | Portland
- Murder -- Investigation -- Oregon -- Fiction
- Murder -- Oregon -- Investigation -- Fiction
- Murder -- Oregon | Portland
- Murder -- Oregon | Portland
- Murder -- Oregon | Willamette River Valley -- History -- 20th century
- Murderers -- Oregon | Lincoln County
- Music -- Oregon
- Musicians -- Oregon -- History -- 20th century
- National monuments -- Law and legislation -- Oregon
- National monuments -- Oregon -- Management
- National parks and reserves -- Law and legislation -- Oregon
- National parks and reserves -- Oregon
- National parks and reserves -- Oregon | Fort Clatsop National Memorial
- Natural disasters -- Oregon
- Natural gas -- Oregon
- Natural gas in submerged lands -- Environmental aspects -- Oregon
- Natural history -- Oregon
- Natural history -- Oregon -- Guidebooks
- Natural resources -- Oregon
- Nature -- Effect of human beings on -- Oregon | Malheur National Wildlife Refuge
- Nature -- Effect of human beings on -- Oregon | Malheur National Wildlife Refuge
- Nature conservation -- Oregon
- Nature conservation -- Oregon -- Periodicals
- Nature conservation -- Oregon | Coos County -- Planning
- Nazis -- Oregon | Portland
- New Age movement -- Oregon -- History -- 20th century
- Nitrogen -- Environmental aspects -- Oregon | La Pine
- Nitrogen -- Oregon | Tualatin River
- Noncitizens -- Oregon
- Nonprofit organizations -- Oregon
- Northern flying squirrel -- Habitat -- Oregon
- Northern spotted owl -- Habitat -- Oregon
- Nutrient pollution of water -- Oregon
- Nutrient pollution of water -- Oregon | North Umpqua River
- Nutrient pollution of water -- Oregon | Sandy River Watershed
- Nutrient pollution of water -- Oregon | Sprague River Watershed
- Nutrient pollution of water -- Oregon | Steamboat Creek Watershed (Douglas County and Lane County)
- Nutrient pollution of water -- Oregon | Upper Klamath Lake Watershed
- Nutrient pollution of water -- Oregon | Willamette River Watershed
- Nutrient pollution of water -- Oregon | Williamson River Watershed
- Nye, Lydia Rider, 1811-1891 -- Travel -- Oregon
- Obsidian mines and mining -- Oregon | Newberry Volcano Region
- Occupy movement -- Oregon
- Off-reservation boarding schools -- Oregon
- Old growth forest conservation -- Oregon
- Old growth forest ecology -- Oregon
- Old growth forests -- Oregon
- Old growth forests -- Oregon -- Literary collections
- Old growth forests -- Research -- Oregon | H.J. Andrews Experimental Forest
- Older people -- Oregon -- Finance, Personal
- Older people -- Pharmaceutical assistance -- Oregon
- Older veterans -- Medical care -- Oregon
- Ophiolites -- Oregon | Grant County
- Oral history -- Oregon
- Oral history -- Oregon
- Oral tradition -- Oregon
- Organic compounds -- Environmental aspects -- Oregon | Salem Region
- Organic water pollutants -- Monitoring -- Oregon | Eugene
- Organic water pollutants -- Oregon | Sandy River Watershed
- Organic water pollutants -- Oregon | Willamette River Watershed
- Organochlorine compounds -- Environmental aspects -- Oregon | Johnson Creek Watershed (Clackamas County and Multnomah County)
- Orthodox Judaism -- Oregon -- Relations | Nontraditional Jews
- Outdoor life -- Oregon
- Outdoor recreation -- Oregon
- Outdoor recreation -- Oregon -- Maps
- Pacific salmon -- Habitat -- Oregon -- Databases
- Pacific salmon fisheries -- Oregon -- Planning
- Painters -- Oregon
- Painters -- Oregon -- Biography
- Paleoecology -- Oregon | Newberry Volcano Region -- Holocene
- Paleontology -- Oregon
- Paleontology -- Oregon
- Paleontology -- Oregon | Astoria -- Miocene
- Paleontology -- Oregon | Blanco, Cape
- Paleontology -- Oregon | Columbia County
- Paleontology -- Oregon | Coos Bay -- Miocene
- Paleontology -- Oregon | Lincoln County
- Paleontology -- Oregon | Washington County
- Paleopedology -- Oregon
- Paper mills -- Energy conservation -- Oregon -- Computer simulation -- Case studies
- Parks -- Oregon -- Guidebooks
- Parks -- Oregon -- Management
- Parks -- Oregon -- Periodicals
- Parole -- Oregon
- Pasture, Right of -- Oregon | Cascade-Siskiyou National Monument
- Pay equity -- Oregon -- Case studies
- Peridotite -- Oregon
- Pesticides -- Environmental aspects -- Oregon | Clackamas River Watershed
- Pesticides -- Environmental aspects -- Oregon | Clackamas River Watershed
- Pesticides -- Environmental aspects -- Oregon | Sandy River Watershed
- Pesticides -- Environmental aspects -- Oregon | Willamette River Watershed
- Pesticides -- Oregon | McKenzie River
- Petroglyphs -- Oregon
- Petroglyphs -- Oregon | Hart Mountain National Antelope Refuge
- Petroleum -- Oregon
- Petroleum in submerged lands -- Environmental aspects -- Oregon
- Petrology -- Oregon
- Peyotism -- Oregon
- Pharmaceutical services insurance -- Oregon
- Phosphorus -- Environmental aspects -- Oregon | Fanno Creek (Washington County)
- Phosphorus -- Environmental aspects -- Oregon | Tualatin River Watershed
- Phosphorus -- Environmental aspects -- Oregon | Upper Klamath Lake
- Pioneers -- Oregon
- Pioneers -- Oregon -- Biography
- Pioneers -- Oregon -- Correspondence
- Pioneers -- Oregon | Willamette River Valley -- History -- 19th century
- Placer deposits -- Oregon
- Plankton populations -- Oregon | Tualatin River
- Plant conservation -- Oregon
- Plate tectonics -- Oregon | Oregon Coast Range
- Plywood industry -- Economic aspects -- Oregon
- Police -- Oregon | Portland -- Fiction
- Poor -- Oregon | Washington County
- Power of attorney -- Oregon
- Precipitation (Meteorology) -- Oregon -- Observations
- Prescription pricing -- Oregon
- Prints -- Oregon | Portland -- Exhibitions
- Prints, American -- Oregon -- Exhibitions
- Prisoners -- Oregon | Lincoln County
- Produce trade -- Government policy -- Oregon
- Prospecting -- Oregon | Medford Region
- Prostitutes -- Oregon -- History
- Prostitution -- Oregon -- History
- Protest movements -- Oregon | Portland
- Pteronarctos -- Oregon
- Public contracts -- Oregon
- Public lands -- Oregon
- Public lands -- Oregon | Douglas County
- Public lands -- Oregon | Haines
- Public records -- Oregon
- Public welfare -- Oregon -- Automation
- Public welfare -- Oregon -- Congresses
- Public welfare -- Oregon | Portland
- Public works -- Oregon -- Evaluation
- Pumice -- Oregon | Klamath Indian Reservation
- Racial profiling in law enforcement -- Oregon | Eugene -- Statistics
- Racial profiling in law enforcement -- Oregon | Eugene -- Statistics
- Racial profiling in law enforcement -- Oregon | Eugene -- Surveys
- Racial profiling in law enforcement -- Oregon | Eugene -- Surveys
- Racism -- Oregon | Eugene
- Racism -- Oregon | Portland
- Racism -- Oregon | Willamette River Valley -- History -- 20th century
- Radioactive substances in rivers, lakes, etc. -- Oregon
- Rain and rainfall -- Oregon -- Mathematical models
- Rajneeshees -- Oregon | Rajneeshpuram -- Psychology -- Case studies
- Ranch life -- Oregon
- Ranch life -- Oregon
- Rare fishes -- Oregon
- Rare plants -- Oregon
- Real property -- Valuation -- Oregon | Mount Hood Wilderness
- Real property, Exchange of -- Oregon | Cascade-Siskiyou National Monument
- Real property, Exchange of -- Oregon | Mount Hood Wilderness
- Recreation areas -- Law and legislation -- Oregon
- Recreation areas -- Law and legislation -- Oregon
- Recreation areas -- Oregon
- Recreation areas -- Oregon | Grant County
- Referendum -- Oregon
- Reforestation -- Oregon | Tillamook State Forest -- History
- Refuse and refuse disposal -- Law and legislation -- Oregon
- Regional planning -- Oregon
- Regional planning -- Oregon | Portland
- Renewable energy sources -- Economic aspects -- Oregon
- Renewable energy sources -- Economic aspects -- Oregon
- Renewable energy sources -- Oregon | Marion County
- Reservoirs -- Oregon | Morrow County -- Environmental conditions
- Restoration ecology -- Oregon | Willamette River
- Restoration monitoring (Ecology) -- Oregon | Willamette River
- Reversion -- Oregon | Hermiston
- Revocable trusts -- Oregon
- Right of way -- Oregon | Crook County
- Right of way -- Oregon | Deschutes County
- Right-wing extremists -- Oregon
- Riparian areas -- Oregon -- Management
- River channels -- Oregon | Chetco River
- River channels -- Oregon | La Pine
- River channels -- Oregon | Umpqua River
- River sediments -- Oregon | Salem Region -- Analysis
- River sediments -- Oregon | Steamboat Creek Watershed (Douglas County and Lane County)
- River sediments -- Oregon | Tualatin River
- River sediments -- Oregon | Tualatin River
- River sediments -- Oregon | Tualatin River Watershed
- River sediments -- Oregon | Umpqua River -- Analysis
- River sediments -- Oregon | Willamette River
- River sediments -- Oregon | Willamette River -- Measurement
- River sediments -- Oregon | Willamette River Watershed -- Analysis
- Rivers -- Aeration -- Oregon | Umpqua River
- Rivers -- Oregon | Sandy River -- Regulation
- Rivers -- Oregon | Tualatin River -- Regulation | Environmental aspects
- Rivers -- Regulation | Environmental aspects -- Oregon | Tualatin River
- Roads -- Oregon -- Design and construction
- Roads -- Oregon | Crater Lake National Park -- Design and construction | History
- Roads -- Right of way -- Oregon | Crook County
- Roads -- Right of way -- Oregon | Deschutes County
- Roadside improvement -- Oregon | Willamette River Valley
- Rock paintings -- Oregon
- Rock paintings -- Oregon | Hart Mountain National Antelope Refuge
- Rodeos -- Oregon -- Fiction
- Runoff -- Oregon | Clackamas River
- Runoff -- Oregon | Fanno Creek (Washington County)
- Runoff -- Oregon | Willamette River Watershed
- Rural families -- Oregon | Willamette River Valley -- History -- 19th century
- Rural lesbians -- Oregon | Myrtle Creek -- Biography