The James Brothers of Missouri

Keith Richards

Jesse James

Robert Bice

Frank James

Noel Neill

Peg Royer

Roy Barcroft

Ace Marlin

Patricia Knox

Belle Calhoun

Lane Bradford

Monk Tucker

Gene Roth

Marshal Rand [Chs. 10-12]

John Hamilton

Lon Royer [Ch.1]

Edmund Cobb

The Sheriff [Chs. 6-8]

Hank Patterson

Duffy [Ch. 4] / Duffy [11]

Dale Van Sickel

Harry Sharkey / Henry Simpson (Chapters 3-4)

Tom Steele

Slim, Lanky Royer Employee [Ch.1] / Drake, Lanky Henchman Guarding Simpson [Ch.4] / Henchman Guarding Wagon [Ch.11]

Lee Roberts

'Brandy' Jones [Chs. 6-7]

Frank O'Connor

Rimrock Citizen

Marshall Reed

Dutch

Chuck Roberson

Townsman (uncredited)