Flash Gordon: The Greatest Adventure of All
1982 · Screenplay
A Real American Hero
1978 · Writer
A Real American Hero
1978 · Producer
Jason of Star Command
1978 · Writer
Final Chapter: Walking Tall
1977 · Screenplay
Spectre
1977 · Screenplay
Grizzly Adams
1977 · Writer
Grizzly Adams
1977 · Story
Star Trek
1973 · Writer
Lancer
1968 · Story
Lancer
1968 · Creator
The Legend of Custer
1968 · Writer
Custer
1967 · Writer
The Girl from U.N.C.L.E.
1966 · Writer
Star Trek
1966 · Writer
The Legend of Jesse James
1965 · Creator
The Rogues
1964 · Writer
Advance to the Rear
1964 · Screenplay
Frontier Circus
1961 · Creator
The Tall Man
1960 · Creator
Rawhide
1959 · Writer
The Rough Riders
1958 · Writer
The Rifleman
1958 · Writer
The Texan
1958 · Writer
Wanted: Dead or Alive
1958 · Writer
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