Context of Report of progress of stream measurements for the calendar year 1904, prepared under the direction of F.H. Newell by Cyrus C. Babb and John C. Hoyt. Part VII. -- Hudson Bay, Minnesota, Wapsipinicon, Iowa, Des Moines, and Missouri River drainages. [U.S. Geological Survey Water Supply and Irrigation Paper No. 130. Series P, Hydrographic Progress Reports, 35.].