1901
U. S. Geological Survey
1:63k
1926
Byllesby Engineering and Management Corporation
1:8m
1892
MOIREAU, Auguste.
1881
C. Colby
1857
Colton, G.W.
1:2m
1934
Leahy, J.F.
1879
Cram, George Franklin
1:1m
1878
Cram, George Franklin
1:1m
1877
Cram, George Franklin
1:1m
1852
Grassl, J. (Joseph)
1:2m