Historical Marker Series

California State Historical Landmark

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www.historicalmarkerproject.com/markers/HM256T_first-commercial-oil-well-in-california_Stevenson-Ranch-CA.html
On this site stands CSO-4 (Pico #4), California's first commerically productive well. It was spudded in early 1876, under the direction of Demetrius G. Scofield, later to become first president of Standard Oil Company of California, and was completed at a d…
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