1872
Beers, F. W. (Frederick W.)
1:127k
1850
Sidney, J.C.
1851
Cornell
1888
Vermeule, C. C. (Cornelius Clarkson), 1858-1950
1:63k
1929
1:63k
1873
Hopkins, G.M.
1:253k
1888
Vermeule, C. C. (Cornelius Clarkson), 1858-1950
1:63k
1888
1:63k
1873
Hopkins, G.M.
1:253k
1986
US Geological Survey
1:100k