1879
Geographical and Geological Survey of the Rocky Mountain Region (U.S.)
1:634k
1873
Wheeler, G.M.
1:507k
1886
TISSANDIER, Albert.
1861
Gunnison, J.W.
1:760k
1893
Wood Brothers
1:3m
1935
White, Ruth Taylor
1934
Leahy, J.F.
1950
Bloodgood, Don
1883
Cram, George Franklin
1:2m
1938
Thomas Brothers
1:2m