Robert Franklin Stroud, known as the "Birdman of Alcatraz", was a convicted murderer, American federal prisoner and author who has been cited as one of the most notorious criminals in the United States. During his time at Leavenworth Penitentiary, he reared and sold birds and became a respected ornithologist. From 1942 to 1959, he was incarcerated at Alcatraz, where regulations did not allow him to keep birds. Stroud was never released from the federal prison system; he was imprisoned from 1909 to his death in 1963.

The Battle of Alcatraz, which lasted from May 2 to 4, 1946, was the result of an escape attempt at Alcatraz Federal Penitentiary by armed convicts. Two Federal Bureau of Prisons officers—William A. Miller and Harold Stites—were killed. Three inmates were also killed during the incident. Fourteen other officers and one uninvolved convict were also injured. Two of the perpetrators were executed in 1948 for their roles.