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Caption: "An Abandoned Hydraulic Mine near Camptonville Calif.," c. 1920. Hillside ravaged by hydraulic mining, in which a pressurized jet of water washes sediment and gravel into a series of sluices, allowing the heavier gold and gold-carrying sediment to sink to the bottom for removal. California banned this environmentally destructive practice in 1884.
Date: 1920
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Caption: "San Diego Fair Grounds." and "39-6, 3,400 Men, Naval Training Station, Balboa Park, San Diego Cal.," c. 1917. With the advent of World War I, the U.S. Navy needed additional training grounds for sailors. In 1917, the City of San Diego offered to lease the Navy a portion of Balboa Park as a temporary training site until a new, more permanent facility could be constructed. This postcard shows 3,400 sailors lined up to form a Navy flag while at the temporary training ground.
Date: 1917
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Summary of communication with the State Banking Department regarding Japanese banks in liquidation
Date: May 21, 1945