1860
Captain G. H. Richards
1913
International Boundary Commission
1:63k
1884
Henderson, C.F.
1913
McInnes, William; Leach, W.W.; Dowling, D.B.
1:380k
1881
1:200k
1854
U.S. Lake Survey
1:200k
1866
Unknown
1:200k
1913
International Boundary Commission
1:63k
1866
Campbell, Archibald
1:60k
1841
US Ex. Ex.
1:142k