prepared under the direction of J.V.B. Wells ; prepared in cooperation with the States of Iowa, Kansas, Missouri, Montana, Nebraska, North Dakota, and South Dakota ; agencies of the Federal Government ; and the Dominion of Canada
Date
1955
Series
Water-supply paper (Washington, D.C.) ; no. 1260-B
prepared under the direction of J.V.B. Wells ; prepared in cooperation with the Montana State Engineer, agencies of the Federal Government, and the Dominion of Canada
Date
1957
Series
Water-supply paper (Washington, D.C.) ; no. 1320-B