1885
1:250k
1908
U.S. Geological Survey
1:250k
1873
Wheeler, G.M.
1:507k
1873
Wheeler, G.M.
1:507k
1873
Wheeler, G.M.
1:507k
1903
Sanchez, A.M.
1:63k
1871
Union Pacific Railroad Company
1876
King, Clarence
1:253k
1860
Mitchell, Samuel Augustus
1:4m
1952
United States. Air Force
1:500k