February 1942. Akron, Ohio. Firestone Rubber. "Conversion. Beverage containers to aviation oxygen cylinders. After shatterproof oxygen cylinders for high altitude flying have passed all tests in the metal division of a large Eastern rubber factory, hot air is blown through the cylinders to remove all trace of moisture. The cylinders are then sealed and stacked for painting." 4x5 nitrate negative by Alfred Palmer for the Office of War Information.
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