by S.G. Robson ... [and others] ; Department of the Interior, United States Geological Survey ; prepared in cooperation with the Colorado Department of Natural Resources, Division of Water Resources, Office of the State Engineer ... [and others]
prepared from surveys by the Wisconsin Geological and Natural History Survey, E. A. Birge, PH.D., director ; Survey in charge of C. Dwight Marsh ; Survey by C. Dwight Marsh and E. F. Chandler ..
by Ralph F. Norvitch ... [and others] ; Department of the Interior, United States Geological Survey. ; prepared in cooperation with the Commonwealth of Massachusetts, Water Resources Commission and Berkshire County
by G.F. Lindholm ... [and others] ; Department of the Interior, United States Geological Survey ; prepared in cooperation with the Minnesota Department of Natural Resources, Division of Waters, Soils, and Minerals
prepared from surveys by the Wisconsin Geological and Natural History Survey ; hydrography in charge of L.S. Smith ; field work by L.S. Smith and H.M. Trippe