Image: Oil wells signalhill1921
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Oil_wells_signalhill1921.jpg (448 × 299 pixels, file size: 23 KB, MIME type: image/jpeg)
Description: Oil wells on Signal Hill, Ca 1921
Title: Oil wells signalhill1921
Credit: Original publication: Shell 1921 Immediate source: http://www.semperaltius.com/signal%20hill.jpg
Author: Shell (Life time: 1921)
Usage Terms: Public domain in the United States
License: PD-US-expired
License Link: //en.wikipedia.org/wiki/File:Oil_wells_signalhill1921.jpg
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