This postcard was published before Alcatraz Island became a Federal Prison. The front reads "Alcatraz Island U. S. Immigration Station, San Francisco, California". The back contains an abbreviated history of the island at the time it was issued. It is a clean card in very fine unused condition with only very slight wear around the edges. (See photos). Shipping weight after packaging will be approximately 1 pound, priority mail minimum. We will ship within the U.S. by Priority Mail at standard USPS rates unles buyer requests another shipping service. Worldwide shipping willl be at best rates available.