1879
Wheeler, G.M.
1:253k
1929
[Washington, D.C. : U.S. Geological Survey]
1:125k
1915
1973
Holmes, Joseph Edward
1:64k
1907
USGS (U.S. Geological Survey)
1891
1902
1869
Geological Survey of California
1:127k
1868
Hoffmann, Chs. F.
1935
California Division of Highways
1:149k
