Bonanza

as Walter Craigsmuir

1959

Magnum, P.I.

as Freighter Captain

1980

Ironside

1967

The Six Million Dollar Man

as General Carmichael

1974

Mannix

1967

Mannix

as Derek

1967

Maverick

as Fergus MacKenzie

1957

Have Gun, Will Travel

1957

Cheyenne

1955

My Three Sons

1960

Combat!

as British Lieutenant

1962

Ben Casey

1961

The Fugitive

Writer

1963

77 Sunset Strip

Writer

1958

Voyage to the Bottom of the Sea

Writer

1964

Thriller

Writer

1960

The Man from U.N.C.L.E.

Writer

1964

Flipper

Writer

1964

The Rat Patrol

Writer

1966

Man from Atlantis

Writer

1977

Garrison's Gorillas

Writer

1967

Behind Closed Doors

Writer

1958

The Losers

Writer

1970

Assault on Agathon

Writer

1975