Public domain
Left, operator attends rebuilt automatic cotter pin making machine formerly used to make bobby pins. Right, machine being rebuilt to produce cotter pins
From the collection of Library of Congress. Free to download, adapt and use — no permission needed.
Credit lineLeft, operator attends rebuilt automatic cotter pin making machine formerly used to make bobby pins. Right, machine being rebuilt to produce cotter pins. 1942-01-01. Farm Security Administration/Office of War Information Collection, Library of Congress. Public domain.