1885
H. T. Allen
1:500k
1827
Vandermaelen, Philippe, 1795-1869
1:2m
1910
Sleem, D.H.
1:625k
1898
J. B. Tyrrell
1:1m
1901
1:313k
1910
1:246k
1917
US Geological Survey
1:250k
1914
Brooks, Alfred H.; Gerdine, T. G.
1:250k
1911
Office of the Chief of Engineers
1:253k
1898
Goodall, Perkins Co.
1:4m