National Geographic11 titles

Journey to the Outer Limits

01 Jan 1973

Miss Goodall and the Wild Chimpanzees

22 Dec 1965

Americans on Everest

10 Sep 1965

National Geographic: The Volga

08 Mar 1977

Grizzly!

31 Oct 1967

The Lonely Dorymen

16 Apr 1968

Zoos of the World

15 Oct 1970

The Incredible Machine

28 Oct 1975

The World of Jacques-Yves Cousteau

24 Mar 1966

Siberia: Russia's Frontier

01 Jan 1970

Redwoods: Anatomy of a Giant

04 Jul 1946