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