Public domain
Barrage balloon manufacture. Fitting a manhold vent in the sidewall of a barrage balloon. These workers are putting in the final pieces of equipment on a completed barrage balloon, just prior to its deflation, packing and shipping to an army air base. In the foreground is a balloon ready for test in
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Credit lineBarrage balloon manufacture. Fitting a manhold vent in the sidewall of a barrage balloon. These workers are putting in the final pieces of equipment on a completed barrage balloon, just prior to its d. 1941-01-01. Palmer, Alfred T., United States. Office Of War Information. Farm Security Administration/Office of War Information Collection, Library of Congress. Public domain.