Brian Donlevy

Stefan Dubechek aka Steve Dangos

Ann Richards

Anna O'Rourke Dangos

Walter Abel

Howard Clinton

John Qualen

Anton Dubechek

Stephen McNally

Teddy Roosevelt Dangos / Narrator

Erville Alderson

Olson - Detroit Auto Works Technician (uncredited)

Fred Aldrich

Assembly Line Worker (uncredited)

Axel Anderson

Immigrant (uncredited)

Charles Bates

Teddy Roosevelt Dangos - Age 8 (uncredited)

Byron Foulger

High School Principal (uncredited)

Noreen Nash

Vaudeville act (uncredited)