Intricately engraved antique stock certificate from the Potomac Oil Company dating back to the early 1900's. This document, which is signed by the company Vice President and Secretary, was printed by the Los Angeles Litho. Co. and measures approximately 10" (w) by 8 1/3" (h).
The Potomac Oil Company was incorporated in Arizona in 1901.
The company had properties in California's Summerland District west of Lookout Park.