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Oil Wells in Ventura County

Fine early map of part of Ventura County, focusing on the Geological and Mineralogical Features of the the region.

The map shows the Devil's Gate District (Sespe Creek) in Ventura County.

The map legend notes:

  • Oil Springs
  • Oil Wells

A nice example of this scarce map, which accompanied a report entitled Oil and Gas Yielding Formations of California, in the State Mining Mining Bureau's November 1900 Bulletin #19.