Sound finders were used in World War I to figure out which way enemy planes were coming from.

Sound finders were used in World War I to figure out which way enemy planes were coming from.

February 13, 1922. Washington, D.C. "Unidentified woman." Demonstrating an ingenious Prohibition-era fashion accessory: the cane-flask.

February 13, 1922. Washington, D.C. "Unidentified woman." Demonstrating an ingenious Prohibition-era fashion accessory: the cane-flask.

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