Directing

1989

… Director

1984

… Director

1981

… Director

1979

… Director

1978

… Director

1976

… Director

1971

… Director

1970

… Director

1969		It's Alive … Director
1969		Hell Raiders … Director
1969		In the Year 2889 … Director

1968		Mars Needs Women … Director
1968		The Other Side of Bonnie and Clyde … Director
1968		Curse of the Swamp Creature … Director
1968		Comanche Crossing … Director

1967		Zontar: The Thing from Venus … Director
1967		The Eye Creatures … Director
1967		Sam … Director
1967		Creature of Destruction … Director

1965

… Director

1964		The Trial of Lee Harvey Oswald … Director
1964		Under Age … Director
1964		Naughty Dallas … Director

1963

… Director

1961

… Director

1960

… Director

1952

… Director

1951

… Director

Writing

1989

… Writer

1984

… Writer

1981

… Screenplay

1979

… Writer

1978

… Screenplay

1976

… Screenplay

1971

… Screenplay

1970

… Story

1969

… Writer

1968		Mars Needs Women … Writer
1968		Comanche Crossing … Writer

1967		Zontar: The Thing from Venus … Screenplay
1967		The Eye Creatures … Writer
1967		Sam … Writer

1965

… Writer

1964		The Trial of Lee Harvey Oswald … Writer
1964		Under Age … Writer
1964		Naughty Dallas … Writer

1963

… Writer

1960

… Writer

1952

… Writer

1951

… Writer

Production

1989

… Producer

1984

… Producer

1981

… Producer

1978

… Producer

1976

… Producer

1971

… Producer

1970

… Producer

1969		Sex and the Animals … Producer
1969		It's Alive … Producer
1969		Hell Raiders … Producer
1969		In the Year 2889 … Producer

1968		Mars Needs Women … Producer
1968		Curse of the Swamp Creature … Producer
1968		Comanche Crossing … Producer

1967		Zontar: The Thing from Venus … Producer
1967		The Eye Creatures … Producer
1967		Sam … Producer
1967		Creature of Destruction … Producer

1964

… Producer

1963

… Producer

1951

… Producer

Editing

1989

… Editor

1971

… Editor

1969		Sex and the Animals … Editor
1969		It's Alive … Editor
1969		In the Year 2889 … Editor

1968		Mars Needs Women … Editor
1968		Comanche Crossing … Editor

1967

… Editor

1964		The Trial of Lee Harvey Oswald … Editor
1964		Under Age … Editor

1963

… Editor

1960

… Editor

1951

… Editor

Acting

1968

as Narrator of Planetarium Film (voice)

1964

as Narrator (voice) (uncredited)

1951

1950

as Bit Part (uncredited)

Crew

1968

… Creator

1951

… Cinematography