1967
1:24k
1878
Campbell, A.
1:127k
1976
1:100k
1958
1:250k
1954
Twining, W.J.
1:507k
1973
U.S. Lake Survey
1:1m
1874
Andreas, A. T. (Alfred Theodore), 1839-1900
1:760k
1935
Arnquist, Kathryn
1:300k