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- Subject is exactly "California Powder Works"
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Date on back of photo: 1905
Date: 1905
Source: Donated by Brian and Ollie Hoefer.
Type: PHOTO
Guns tested gun powder manufactured at the California Powder Works. The gun on the right fired an eight-inch diameter shell.
Date: 1904
Source: Photo courtesy of Brian Hoefer.
Type: PHOTO