1875
Bergland, Eric
1:1m
1879
Wheeler, G.M.
1:253k
1901
U. S. Geological Survey
1:63k
1904
U.S. Geological Survey
1:63k
1898
Spurr, Josiah Edward
1:63k
1881
Hayden, F.V.
1:253k
1881
Hayden, F.V.
1:253k
1881
Hayden, F.V.
1:253k
1898
Spurr, Josiah Edward
1:31k
1898
Spurr, Josiah Edward
1:31k