Henry K. Dunn
Director John Nesbitt
Producer

John Nesbitt
Narrator (voice) Matthew Boulton
Dr. Edward Jenner (uncredited) Helen Brown
Mary Phipps (uncredited) Harry Cording
Village Dairyman (uncredited) Fay Helm
Mrs. Edward Jenner (uncredited) Raymond Severn
Little Jim Phipps (uncredited) William Tannen
Sarah's Sweetheart (uncredited)

Jackson Rose
Director of Photography Mildred Rich
Editor Leonid Raab
Orchestrator Herman Boxer
Screenplay David Snell
Original Music Composer