1973
U.S. Lake Survey
1:1m
1874
Andreas, A. T. (Alfred Theodore), 1839-1900
1:760k
1935
Arnquist, Kathryn
1:300k
1948
Rand McNalley & Company
1:1m
1847
projected and drawn under the direction of George Talcott, by A.B. Gray
1:370k
1973
NOS Lake Survey Center
1:600k
1973
NOS Lake Survey Center
1:600k
1956
Shell Oil Company
1:950k
1878
Cram, George Franklin
1:1m
1877
Cram, George Franklin
1:1m