1856
U.S. Coast Survey
1:40k
1841
US Ex. Ex.
1:142k
1881
1:200k
1854
U.S. Lake Survey
1866
Unknown
1870
White, Charles A.
1:253k
1853
Bache, A. D.
1:80k
1877
Hanson, John
1:380k
1910
Clason
1934
Double, Lee R.