1919. Geological Survey (U.S.), Marshall, R. B. (Robert Bradford), 1867-1949, and United States. Army. Corps of Engineers. Relief shown by contours. Contour interval 5 feet. "R.B. Marshall, Chief Geographer, W.H. Herron, Geographer in charge; Topography by J.F. McCook a...
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1919. Geological Survey (U.S.), Marshall, R. B. (Robert Bradford), 1867-1949, and United States. Army. Corps of Engineers. Relief shown by contours. Contour interval 5 feet. "R.B. Marshall, Chief Geographer, W.H. Herron, Geographer in charge; Topography by C.B. Childs ....