Deputy Director Brown
Obstetrician
Walter Warner Sr.
Col. Mason
Sumner Murdock
Mr. Pike
The Cat in the Hat / Narrator
Bob Rutherford
Derek's Father
Frank Halloran
Francis
Dr. Rochelle
Father Francis Ryan
Dr. Karl Janss
Ford
Narrator
Henry D. Hyde
Narrator (voice)
Father Nestor
Elmo Tyson
Willie the Wino
Geoffrey Wiggins
Wally
Ray Mellette
President
Narrator (uncredited)
Ron Sandler
Dr. Ed Johnson
Dr. Gordon
Bill Cairns
Dr. Eliot Losen
Grandpa (voice)
Harry Tannenbaum
The Banker with Chris
Thomas Watson
Charlie Hume
Roger Philby
Professor Lloyd Rhodes
Bob Ranier
Sidney Pomerantz
Mr. Hoyt
Clinton Anderson
President Harris
Bill Wendover
Mr. Watkins
Everett Daye
Justice Joseph Crouch
Francis Ryan
GI Engineer Walter Maxwell (uncredited)
Richard Simmons
Mr. Trapwell (segment "The Scoop")