Writing
A Few Dollars for Django
1966 · Story
Hour of Death
1964 · Screenplay
El inquilino
1958 · Screenplay
A Bullet for Rommel
1969 · Story
School of Death
1975 · Story
The Relentless Four
1965 · Screenplay
Seven Into Hell
1968 · Writer
The Vengeance of Pancho Villa
1967 · Writer
¡Cuidado con las señoras!
Black Angel of the Mississippi
1964 · Writer
Los conquistadores del Pacífico
1963 · Story
When Heroes Die
1970 · Writer
La Promesa
1976 · Writer
If You Shoot… You Live!
1975 · Writer
Hell Commandos
1969 · Writer
Twenty Thousand Dollars for Seven
1969 · Screenplay
A Nun at the Crossroads
1967 · Screenplay
Two Guns for Two Twins
Two Thousand Dollars for Coyote
Rosa de Lima
1961 · Screenplay
Habanera
1958 · Writer
Curra Veleta
1956 · Writer
