Public domain
Antiaircraft gun carriage. Axle brackets for a thirty-seven millimeter anti-aircraft gun carriage are machined on this milling machine. Today's fast-moving planes present a target requiring the very best in antiaircraft guns. Carriage and mount are as important as the gun itself for rapid fire power
From the collection of Library of Congress. Free to download, adapt and use — no permission needed.
Credit lineAntiaircraft gun carriage. Axle brackets for a thirty-seven millimeter anti-aircraft gun carriage are machined on this milling machine. Today's fast-moving planes present a target requiring the very b. 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.