1902
C&GS
1:40k
1901
U. S. Geological Survey
1:125k
1975
Alpha, Tau Rho
1841
US Ex. Ex.
1:142k
1853
Bache, A. D.
1:80k
1973
US Geological Survey
1:24k
1934
Mora, Jo (1876-1947)
1910
Clason
1876
1:634k