In 1934, but it was a Union fort in the civil war so it has been around along time. The first people it held as a prison was in 1873 and they were Native American. Nineteen were Hopi who refused to...
Roy George Gardner (110-AZ) spent time at USP Alcatraz, CA from September 4, 1934 to August 8, 1936. He died by committing suicide on January 10, 1940 by cyanide gas poisoning.