1876
Wheeler, G.M.
1:127k
1880
Bolitho, Edwin
1902
U.S. Geological Survey
1:63k
1878
Wheeler, G.M.
1:253k
1878
Wheeler, G.M.
1:253k
1881
Hayden, F.V.
1:253k
1881
Hayden, F.V.
1:253k
1881
Hayden, F.V.
1:253k
1881
Hayden, F.V.
1:253k
1878
Cram, George Franklin