National Geographic Specials - Season 4

1. Amazon

Aired: 2/20/1968

2. The Lonely Dorymen: Portugal's Men of the Sea

Aired: 4/16/1968

3. America's Wonderlands: The National Parks

Aired: 11/28/1968

4. Reptiles and Amphibians

Aired: 12/3/1968

22. Episode 22