- J. Anthony Hughes
- Jack Holden
- Eleanor Stewart
- Anne Holden
- Dick Curtis
- Butch Mason
- Charles Middleton
- Saunderson
- Jeffrey Sayre
- Jimmy
- George P. Breakston
- Louie Howard
- Art Mills
- Big Al
- Michael Mark
- Mike, Convict in Ravine
- John Ince
- Board Chairman
- Joe Whitehead
- Joe Williams
- John 'Skins' Miller
- Convict Skins Miller
- John Shay
- Phone Guard
- Jack Cheatham
- Court Gate Guard
- Drew Demorest
- Guard Gaines
- Nancy Evans
- Mrs. Doakes
- Ted R. Stanich
- Prison Department of Music Supervisor Ted R. Standish
- John A. Hendricks
- Prison Orchestra Conductor John A. Hendricks
- G. Rolph Burr
- Prison Broadcast Announcer G. Rolph Burr
- Jack Reavis
- Prison Glee Club Director Jack Reavis
- Carl C. Hocker
- San Quentin Prison Guard Carl C. Hocker
- William Cowley
- Prison Band Vocalist William Cowley
- Dwight A. Greene
- Prison Sound Technician Dwight A. Greene
- Victor Adamson
- Convict
- Phil Arnold
- Convict
- Richard Cramer
- Convict
- Mike Donovan
- Prison Guard
- Frank LaRue
- Guard
- Frank Leigh
- Board Member
- Pat McKee
- Convict
- Neyle Morrow
- Tony Binder
- 'Snub' Pollard
- Convict
- Sammy Shack
- Convict
- J.R. Thomas
- San Quentin Prison Guard J. R. Thomas
