From 1934 to 1963, Alcatraz stood as the most feared prison in America, reserved exclusively for the nation's most dangerous criminals.
Machine Gun Kelly
George Kelly Barnes, better known as “Machine Gun Kelly,” drew the attention of U.S. authorities after brandishing a machine gun and kidnapping wealthy oil magnate Charles Urschel. A ransom note soon reached Urschel’s associate, demanding $200,000 for his safe return. The ransom was paid, and Urschel was released unharmed.
Thanks to a detailed FBI interview, Urschel provided critical information that led agents to a hideout in Tennessee. Barnes was captured and eventually sent to Alcatraz.
He spent seventeen years on The Rock. Though he had built a fearsome image on the outside, Alcatraz's harsh regime quickly subdued him. He became a model prisoner—even serving as an altar boy—before being transferred to Leavenworth, where he died in 1954.
Robert Stroud
Nicknamed “The Birdman of Alcatraz,” Robert Stroud became one of America's most infamous inmates. At just 18, he was convicted of murdering a bartender in Alaska and sentenced to 12 years in prison. While serving time at Leavenworth, Stroud killed a prison guard, earning a death sentence that was later commuted to life imprisonment.
During his years in solitary confinement, Stroud stumbled upon a nest of injured birds and began nursing them back to health. This sparked a deep interest in ornithology—over time, he cared for nearly 300 birds and even authored a book that earned him recognition in the scientific community.
However, his time at Leavenworth ended in 1942 when authorities discovered he was secretly producing alcohol in his cell. He was transferred to Alcatraz, where prison rules prohibited him from keeping birds. Undeterred, Stroud redirected his focus to writing, producing a detailed history of the American penal system.