1928
International Boundary Commission
1:24k
1908
International Boundary Commission
1:24k
1928
International Boundary Commission
1:24k
1973
NOS Lake Survey Center
1:25k
1971
NOS Lake Survey Center
1:25k
1973
NOS Lake Survey Center
1:42k
1973
U.S. Lake Survey
1:1m
1973
U.S. Lake Survey
1:1m
1874
Andreas, A. T. (Alfred Theodore), 1839-1900
1:760k
1935
Arnquist, Kathryn
1:300k