Known for
Writing17
movieThe Valdez Horses
1973
Screenplay
movieThe Deserter
1970
Screenplay, Adaptation
movieFlap
1970
Screenplay, Novel
movie100 Rifles
1969
Screenplay
movieHellfighters
1968
Screenplay
movieThe War Wagon
1967
Screenplay, Novel
movieTarzan and the Valley of Gold
1966
Screenplay
movieRio Conchos
1964
Screenplay, Novel
tv12 O'Clock High
1964
Writer
tvThe Virginian
1962
Writer
movieThe Second Time Around
1961
Screenplay
movieThe Comancheros
1961
Screenplay
moviePosse from Hell
1961
Screenplay, Novel
movieFlaming Star
1960
Screenplay, Novel
movieSeven Ways from Sundown
1960
Screenplay, Novel
tvLawman
1958
Writer
tvThe Rifleman
1958
Writer