1900
Gannett, Henry
1:125k
1882
Bancroft, Hubert Howe.
Walcott, Charles D.
1903
U. S. Geological Survey
1946
Bascom
1966
O'Brien, Emmett J
1:63k
1968
Alpha, Tau Rho
1862
U.S. Coast Survey
1:20k