Geological Survey (U.S.) and Marshall, R. B. (Robert Bradford), 1867-1949. R.B. Marshall, chief geographer ; Frank Sutton, geographer in charge ; topography by U.S. Geological Survey. Relief shown by contours and spot heig... Department of the Interior, U.S. Geological Survey.
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Gannett, Henry, 1846-1914 and Douglas, E. M. (Edward Morehouse), 1855-1932. Henry Gannett, chief cartographer ; E.M. Douglas, topographer in charge ; triangulation and topography by R.H. Chapman. Relief shown by contours, h... Department of the Interior, U.S. Geological Survey.