1939
United States Department of the Interior, Geological Survey
1:125k
1940
Tucker, W. Burling, 1880 / Sampson, R. J.
1:380k
1944
USGS (U.S. Geological Survey)
1:125k
1871
Wheeler, G.M.
1:507k
1914
USGS (U.S. Geological Survey)
1:125k
1950
USGS (U.S. Geological Survey)
1:125k
1929
[Washington, D.C. : U.S. Geological Survey]
1:125k
1915
[Washington, D.C. : U.S. Geological Survey]
1:125k
1973
Holmes, Joseph Edward
1:64k
1873
Whitney, J.D.
1:380k