These gas masks were reconditioned at the Edgewood Arsenal for civilian defense use during World War II. Later, in the 1950s and '60s, the arsenal near the Chesapeake Bay was used for secret chemical weapons testing run by the U.S. Army.

Photo by Jack Delano

Above: These gas masks were reconditioned at the Edgewood Arsenal for civilian defense use during World War II. Later, in the 1950s and '60s, the arsenal near the Chesapeake Bay was used for secret chemical weapons testing run by the U.S. Army.

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