Screenplays
- They Knew What They Wanted (1940)
- A Lady Takes a Chance (1943)
- The Green Years (1946)
- Song of Love (1947)
- The Three Musketeers (1948)
- Madame Bovary (1949)
- The Secret Garden (1949)
- The Schumann Story (1950) short film adaptation of Song of Love
- The Adventures of Quentin Durward (1955)
- The Power and the Prize (1956)
- The Wonderful Country (1959)
- Four Horsemen of the Apocalypse (1962)
- Khartoum (1966) Nominated for an Academy Award for Writing Original Screenplay
- The Animal Within (1975) documentary
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