Public domain
Fill 'er up! Tugging at the large hose, known as the "inflation sleeve", this worker stands inside the "manhole" of a new barrage balloon to guide the sleeve into the opening through which it will pump air to test the giant rubber balloon for leaks. General Tire and Rubber Company, Akron, Ohio
From the collection of Library of Congress. Free to download, adapt and use — no permission needed.
Credit lineFill 'er up! Tugging at the large hose, known as the "inflation sleeve", this worker stands inside the "manhole" of a new barrage balloon to guide the sleeve into the opening through which it will pum. 1941-01-01. Palmer, Alfred T., United States. Office For Emergency Management. Farm Security Administration/Office of War Information Collection, Library of Congress. Public domain.