1985
1:100k
1985
1:100k
1905
U.S. Lake Survey
1:120k
1880
US NAVY HYDROGRAPHIC OFFICE
1:213k
1871
Corps of Engineers
1:30k
1958
U.S. Lake Survey
1:120k
1948
U.S. Lake Survey
1:120k
1946
U.S. Lake Survey
1:120k
1940
U.S. Lake Survey
1:120k
1959
1:250k