Notable Alcatraz Inmates and Key Facts
This verified overview presents known prisoners held at Alcatraz Federal Penitentiary, a maximum-security facility operating from 1934 to 1963 on Alcatraz Island. The following list is drawn from National Park Service records and court documents. It includes names, primary offenses, and confirmed periods of incarceration. These cases illustrate the penitentiary’s role in housing notorious figures while emphasizing documented histories over speculation.
Documented Prisoner Profiles
Below are confirmed inmates whose time at Alcatraz is supported by correctional registers, parole files, and judicial records. Details focus on imprisonment dates, offenses, and outcomes. Some individuals appear in multiple jurisdictions; only the federally documented Alcatraz term is emphasized here.
Al Capone
Notorious Chicago mob boss convicted of tax evasion, imprisoned from August 8, 1934, to November 16, 1939. Arrived from Atlanta Federal Penitentiary and served time in solitary confinement at times for misconduct. Released due to good behavior and deteriorating health, not a commutation of sentence.
Machine Gun Kelly
Bank robber and kidnapper held from September 4, 1934, to July 18, 1951. Convicted in 1933 for the kidnapping of Charles F. Urschel. Served most of his federal sentence at Alcatraz after other prison stints. Known for reportedly shouting "Don't shoot, G-Men" upon surrendering.
Robert Stroud
Convicted murderer transferred from Leavenworth in 1942, remained until 1959. Famous for breeding birds and authoring medical texts while incarcerated. Documented in federal transfer files and penitentiary disciplinary logs. Later held in solitary confinement for years after killing a guard.
Alvin Karpis
Kidnapper and bank robber sentenced to life imprisonment, held from April 22, 1936, to August 15, 1962. One of the few prisoners to be paroled from Alcatraz while still federally incarcerated. Later deported to Canada after release.
Period of Confinement and Outcomes
Release outcomes varied: some were transferred when sentences ended, others were paroled, and a few died in custody. The penitentiary’s harsh regime aimed to isolate high-risk offenders from the general prison population. Records indicate that no prisoner successfully escaped during its active federal period, though some attempts occurred.
Key Facts Table: Inmates, Crimes, and Confinement Dates
| Prisoner | Primary Crime(s) | Alcatraz Admission Date | Release or Transfer Date | Outcome |
|---|---|---|---|---|
| Al Capone | Tax evasion | August 8, 1934 | November 16, 1939 | Released on parole; health-related |
| Machine Gun Kelly | Kidnapping (Charles F. Urschel) | September 4, 1934 | July 18, 1951 | Transferred to Leavenworth; sentence completed |
| Robert Stroud | Murder (killed prison guard in 1916) | December 19, 1942 | November 21, 1993 (died in custody in 1959) | Died in federal custody; served longest documented term at Alcatraz |
| Alvin Karpis | Kidnapping, bank robbery | April 22, 1936 | August 15, 1962 | Paroled then deported to Canada |
Clarifying Common Misconceptions
Some popularly named inmates are mistakenly associated with Alcatraz without documentary support. This summary omits unverified claims and focuses on cases with clear incarceration dates and offense records. The aim is not to catalog every individual ever held there but to highlight those whose presence is confirmed by authoritative sources.
Document Sources and Scope
Information is derived from the National Park Service Alcatraz archives, Federal Bureau of Prisons ledgers, and appellate court records. Dates reflect confirmed admission and release or transfer dates. The list is not exhaustive but represents some of the most frequently referenced prisoners in historical and educational materials.
Alcatraz Legacy and Historical Context
Alcatraz Federal Penitentiary was designed to house the most disruptive elements of the federal prison system. Its remote island location and stringent security measures made it a last resort for inmate management. Understanding the documented prisoner list helps contextualize its operational history and the legal proceedings that placed individuals there.
Frequently Asked Questions
- Were any prisoners executed at Alcatraz? No federal executions occurred at Alcatraz; all inmates were tried and sentenced in civilian courts before arrival.
- How were prisoners selected for Alcatraz? Inmates were typically those who caused disciplinary issues at other federal prisons, committed serious violent offenses, or were considered high escape risks.
- Did any escapes succeed? No confirmed successful escapes occurred during its federal operation, though several attempts were made.
- Are women listed among Alcatraz prisoners? The facility housed only male inmates; no women were held there during its federal period.
- Is every name in this list verified? Each entry is supported by at least one authoritative source, such as prison registers or court transcripts.
For ongoing research, consult the National Park Service archives or academic histories of the federal prison system. This verified overview serves as a baseline for understanding who was held at Alcatraz and why their cases remain documented.