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.].
