National Geographic: Splendid Stones
1991 · Writer
National Geographic: Splendid Stones
1991 · Producer
National Geographic: The Volga
1977 · Director
National Geographic: The Volga
1977 · Writer
National Geographic: The Volga
1977 · Producer
The Incredible Machine
1975 · Writer
The Incredible Machine
1975 · Director
Birds Do It, Bees Do It
1974 · Director
Hollywood: The Dream Factory
1972 · Writer
Hollywood: The Dream Factory
1972 · Producer
The Wolf Men
1969 · Producer
The Wolf Men
1969 · Writer
The Wolf Men
1969 · Director
Dear Mr. Gable
1968 · Executive Producer
Grizzly!
1967 · Writer
Grizzly!
1967 · Director
National Geographic Specials
1965 · Director
National Geographic Specials
1965 · Writer
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