Richard Derr

David Randall

Barbara Rush

Joyce Hendron

Peter Hansen

Dr. Tony Drake

John Hoyt

Sydney Stanton

Larry Keating

Dr. Cole Hendron

Rachel Ames

Julie Cummings

Stephen Chase

Dr. George Frye

Frank Cady

Harold Ferris

Hayden Rorke

Dr. Emery Bronson

Sandro Giglio

Dr. Ottinger

Kirk Alyn

Rioter Bringing Guns (uncredited)

James Congdon

Eddie Garson (uncredited)

Gertrude Astor

Traveler (uncredited)

Estelle Etterre

Traveler (uncredited)

Paul Frees

Narrator/U.S. President (voice)

Mary Murphy

Student