1940
Lindgren Brothers
1878
RECLUS, Élisée.
1894
SHALER, Nathaniel Southgate.
1879
Geographical and Geological Survey of the Rocky Mountain Region (U.S.)
1:634k
1873
Wheeler, G.M.
1:507k
1886
TISSANDIER, Albert.
1893
Wood Brothers
1:3m
1924
[Tucson] : Arizona Bureau of mines
1934
Leahy, J.F.
1950
Bloodgood, Don