1919. Geological Survey (U.S.). The rectangles indicate the areas shown on the accompanying maps.; "Divisions outlined and named by Association of American Geographers." 25 x 39 c... U.S. Geological Survey (Washington, D.C).
Search Results
1911. Geological Survey (U.S.). Shows drainage, state boundaries and principal cities. 43 x 71 centimeters Scale 1:7,000,000 General Map Collection. U.S. Geological Survey (Washington, D.C).