
1886
1:250k

1951
United States. Air Force
1:500k

1966
Shane, Ralph M.

1878
Twining, W.J.
1:507k

1875
Ludlow, William
1:760k

1893
Union Pacific Railway Company.

1875
Cram Atlas Company
1:1m

1938
United States. Post Office Department
1:766k

1938
Thomas Brothers
1:2m

1879
U.S. General Land Office
1:1m