Public domain
Holabird ordnance depot, Baltimore, Maryland. A convoy prepares for departure by checking all tires on all vehicles. Air pressure must be at the required poundage on every tire before the convoy is allowed to leave. Vehicle in the center has mobile air pressure pump attached to trailer
From the collection of Library of Congress. Free to download, adapt and use — no permission needed.
Credit lineHolabird ordnance depot, Baltimore, Maryland. A convoy prepares for departure by checking all tires on all vehicles. Air pressure must be at the required poundage on every tire before the convoy is al. 1943-01-01. Rosener, Ann. Farm Security Administration/Office of War Information Collection, Library of Congress. Public domain.