1882
Wheeler, G.M.
1:507k
1882
Wheeler, G.M.
1:507k
1849
Whiting, W.H.C.
1:634k
1883
(U.S. War Department) Office of the Chief of Engineers, U.S.A.
1:475k
1807
Humboldt, Alexander von, 1769-1859
1:2m
1944
United States. Department of Commerce
1:500k
1878
Wheeler, G.M.
1:253k
1878
Wheeler, G.M.
1:253k
1861
Parke, John G.
1:760k
1882
Thayer, H.L.
1:1m