Alcatraz Inmate AZ-3 — Leon Harold Gregory

A Biography of One of the Original Prisoners Sent to Alcatraz

Name: Leon Harold Gregory
Alcatraz Register Number: AZ-3
Federal Register Number: Unknown
Date Arrived at Alcatraz: August 1934
Status: Among the very first prisoners transferred to Alcatraz Federal Penitentiary
Historical Significance: One of the original inmates selected to establish the federal prison population when Alcatraz opened in 1934.

Overview

Leon Harold Gregory occupies a unique place in Alcatraz history. Assigned Register Number AZ-3, he was among the first men ever processed into the newly established United States Penitentiary at Alcatraz Island.

Only two prisoners preceded Gregory in the numbering system:

1. Frank Lucas Bolt (AZ-1)

2. Charles R. Copp (AZ-2)

Gregory became the third inmate officially registered at Alcatraz, making him one of the prison's foundational prisoners and part of the first contingent of inmates that arrived when Alcatraz began operating as a federal penitentiary on August 11, 1934. (National Archives)

Early Life

Little biographical information concerning Leon Harold Gregory's childhood, birthplace, family history, or education has survived in publicly accessible records.

This lack of documentation is not unusual for many early Alcatraz prisoners. Numerous inmate files remain archived within federal collections and have never been digitized for public research.

The National Archives notes that prisoner case files, intake photographs, disciplinary records, and transfer documentation for Gregory are preserved within their holdings. (National Archives)

Criminal Background

The exact crimes that resulted in Gregory's federal incarceration have not been widely published.

Researchers studying Alcatraz often encounter inmates such as Gregory whose criminal histories remain buried within:

• FBI investigative files

• Bureau of Prisons transfer records

• sentencing documents

• federal court proceedings

• institutional disciplinary reports

Because Gregory entered Alcatraz during its opening period in 1934, historians generally conclude that he was considered:

• difficult to manage,

• escape-prone,

• violent,

• or a repeat offender.

Alcatraz was created specifically to house federal prisoners who had demonstrated serious disciplinary problems elsewhere in the prison system. (Wikipedia)

Transfer to Alcatraz

On August 11, 1934, the first train carrying federal prisoners departed from Leavenworth Penitentiary under heavy guard.

The prisoners traveled by rail to California before being ferried across San Francisco Bay to Alcatraz Island.

Among those men was Leon Harold Gregory.

Being assigned AZ-3 indicates Gregory was processed almost immediately after arrival.

The early numbering sequence was:

Alcatraz NumberPrisonerAZ-1Frank Lucas BoltAZ-2Charles R. CoppAZ-3Leon Harold GregoryAZ-4Joseph Constantine HarrisonAZ-5Forrest B. Henry

This sequence demonstrates Gregory's importance within the historical record as one of the prison's first occupants. (National Archives)

Life at Alcatraz

Gregory entered Alcatraz during a period when the institution was still defining its routines and reputation.

Conditions on the island were severe.

Prisoners experienced:

• strict silence rules

• regimented schedules

• limited privileges

• constant surveillance

• highly restricted visitation

• intense disciplinary practices

Inmates were expected to earn privileges rather than automatically receive them.

The prison administration believed harsh conditions would deter future criminal activity.

The standard inmate day consisted of:

6:30 AM
Wake-up call

7:00 AM
Breakfast

Morning–Afternoon
Assigned labor

Late Afternoon
Exercise yard

Evening
Lockdown

Most prisoners spent approximately 14 hours each day confined inside cells measuring roughly 5 feet by 9 feet.

Gregory would have experienced Alcatraz during its earliest and most rigid years, when prison regulations were at their strictest. (Wikipedia)

Historical Importance

Although Leon Harold Gregory never achieved the notoriety of inmates such as:

• Al Capone

• Alvin Karpis

• Robert Stroud

• Frank Morris

his historical importance is significant.

Gregory's legacy lies in his status as:

The Third Official Alcatraz Prisoner

Only two men preceded him in the institutional register.

For historians, AZ-3 represents an important artifact of Alcatraz's opening era.

The low inmate number indicates Gregory was present at the very beginning of what would become America's most famous federal prison.

His inmate designation appears in:

• National Archives records

• Alcatraz inmate rosters

• Bureau of Prisons listings

• numerical prisoner indexes

These surviving documents confirm Gregory's place in Alcatraz history. (National Archives)

Surviving Records

The following materials are believed to exist for Leon Harold Gregory within federal archival collections:

• inmate intake photograph

• fingerprint card

• transfer paperwork

• sentence documentation

• disciplinary reports

• correspondence records

• release or transfer information

The National Archives at San Francisco indicates that many Alcatraz inmate case files remain preserved and can be requested for historical research purposes. (National Archives)

Sources

• National Archives – Former Alcatraz Inmates Index (National Archives)

• Alcatraz Inmate Numerical Register (Alcatraz History)

• History of Alcatraz Federal Penitentiary (Wikipedia)

Research Note: Because Leon Harold Gregory was not a nationally famous inmate, much of his detailed personal history remains unpublished. His complete inmate file, which likely includes photographs, criminal history, transfer records, and disciplinary reports, would need to be obtained from the National Archives in San Francisco for a fully exhaustive biography. (National Archives)