1935
California Division of Highways
1:201k
1879
Wheeler, G.M.
1:2m
1932
Ventura (Calif.). Office of the City Engineer.
1888
Rand McNally and Company
1:380k
1937
Ventura County (Calif.). Office of the County Surveyor.
1:180k
1965
Dudley, Leavitt
1:250k
1935
California Division of Highways
1:161k
1880
De Laveaux, Gustave.
1:148k
1930
Reddick, Harry E.
1903
Washington, D.C. : U.S. Geological Survey
1:63k