1972
Alpha, Tau Rho
1913
Denny, Edward & Co.
1:125k
1965
Dudley, Leavitt
1:250k
1935
California Division of Highways
1:161k
1937
Ventura County (Calif.). Office of the County Surveyor.
1:180k
1930
Reddick, Harry E.
1969
California Division of Mines and Geology
1:250k
1881
Wheeler, G.M.
1:253k
1978
Alpha, Tau Rho
1932
Ventura (Calif.). Office of the City Engineer.
1:10k