1947
Sunderland, Clyde H.
1947
Sunderland, Clyde H.
1938
Thomas Brothers
1:24k
1930
Hoffman, E. A.
1:27k
1947
Sunderland, Clyde H.
1872
Allardt, G. F.
1:16k
1913
Lawson, Andrew C.
1:63k
1913
Lawson, Andrew C.
1:63k
1913
Lawson, Andrew C.
1:63k
1913
U. S. Geological Survey
1:63k