1965
Dudley, Leavitt
1:250k
1937
Ventura County (Calif.). Office of the County Surveyor.
1:180k
1978
Alpha, Tau Rho
1930
Reddick, Harry E.
1978
US Geological Survey
1:250k
1972
Alpha, Tau Rho
1879
Wheeler, G.M.
1:2m
1908
U.S. Geological Survey
1:125k
1903
U. S. Geological Survey
1:125k
1881
Wheeler, G.M.
1:253k