Alcatraz Island - Golden Gate National Recreation Area
Photo -- See Caption Below

Alcatraz, like other federal prisons, manufactured a wide array of products for use by the military during World War II. These signs were posted in Alcatraz workshops, listing specific goods that were being produced for the Army and Navy.
Tagboard, ink. W 20.4, H 12.8, T .1 cm
Golden Gate National Recreation Area, GOGA 18682