Search for the Submarine I-52
2000 · Writer
Pursuit of the Giant Bluefin
1999 · Executive Producer
National Geographic's Storm of the Century
1998 · Executive Producer
The Dragons of Galapagos
1998 · Narrator (voice)
The Sonoran Desert: A Violent Eden
1997 · Executive Producer
Volcano: Nature's Inferno
1997 · Executive Producer
Puma: Lion of the Andes
1996 · Executive Producer
Okavango: Africa's Wild Oasis
1996 · Executive Producer
Inside the White House
1996 · Executive Producer
The New Chimpanzees
1995 · Executive Producer
30 Years of National Geographic Specials
1995 · Executive Producer
National Geographic - Arctic Kingdom: Life at the Edge
1995 · Executive Producer
Jewels of the Caribbean Sea
1994 · Writer
Jewels of the Caribbean Sea
1994 · Executive Producer
National Geographic: Lost Kingdoms of the Maya
1993 · Executive Producer
Torn Between Two Fathers
1989 · Writer
Secrets of the Titanic
1986 · Writer
Realm of the Alligator
1986 · Writer
Natural World
1983 · Writer
Etosha: Place of Dry Water
1979 · Writer
Birds Do It, Bees Do It
1974 · Director
Birds Do It, Bees Do It
1974 · Writer
Hollywood: The Dream Factory
1972 · Executive Producer
Dear Mr. Gable
1968 · Producer
Dear Mr. Gable
1968 · Writer
The Really Big Family
1966 · Dialogue
National Geographic Specials
1965 · Writer
National Geographic Specials
1965 · Director
Voyage of the Brigantine Yankee
Writer
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