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]
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