National Geographic Specials

Season 1

3 Episodes

1965

Season 2

2 Episodes

2002

Season 3

4 Episodes

1967

Season 4

5 Episodes

1968

Season 5

4 Episodes

1969

Season 6

3 Episodes

1970

Season 7

3 Episodes

1971

Season 8

3 Episodes

1972

Season 9

4 Episodes

1973

Season 10

3 Episodes

1974

Season 11

2 Episodes

1975

Season 12

3 Episodes

1976

Season 13

4 Episodes

1977

Season 14

3 Episodes

1978

Season 15

4 Episodes

1979

Season 16

5 Episodes

1980

Season 17

4 Episodes

1981

Season 18

4 Episodes

1982

Season 19

4 Episodes

1983

Season 20

4 Episodes

1984

Season 21

6 Episodes

1985

Season 22

6 Episodes

1986

Season 23

4 Episodes

1987

Season 24

8 Episodes

1988

Season 25

6 Episodes

1989

Season 26

5 Episodes

1990

Season 27

5 Episodes

1991

Season 28

5 Episodes

1992

Season 29

4 Episodes

1993

Season 30

5 Episodes

1994

Season 31

5 Episodes

1995

Season 32

10 Episodes

1996

Season 33

6 Episodes

1997

Season 34

9 Episodes

1998

Season 35

9 Episodes

1999

Season 36

0 Episodes

Season 37

0 Episodes

Season 38

0 Episodes

Season 39

0 Episodes

Season 40

0 Episodes

Season 41

0 Episodes

Season 42

0 Episodes

Season 43

0 Episodes

Season 44

0 Episodes

Season 45

1 Episode

2010