Newhall Oil Field
Here is a 1934 map of the Newhall Oil Field from Walling, R. W., 1934, Report on Newhall Oil Field: California Oil Fields, Summary of Operations of the State Oil and Gas Supervisor: Department of Natural Resources, Division of Oil and Gas, Vol. 20 No. 2. You can see how the Pico Anticline forms, what Walling calls, the Pico Anticline District.
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