Worker operating rotary milling machine, Chrysler Corporation, Plymouth Division plant
View of worker operating a rotary milling machine at Chrysler Corporation, Plymouth Division plant in Detroit, Michigan. Label on back: "Typical of the conversion of automobile production machinery to war production is the rotary milling machine pictured above. This war formerly used to mill the top and bottom of a Plymouth cylinder block. Now it is being used to mill the radial grooves on the loading mechanism of a Chrysler-built heavy anti-aircraft gun. WP-4504. Chrysler Corporation, Detroit, Michigan." Handwritten on back: "Conversion."