Production Credits
Mark Walthour has 13 production credits.Lighting
Credited for Chief Lighting Technician in 6 shows - Back to the Future, Back to the Future Part II, Back to the Future Part III, Hook, Death Becomes Her and Jurassic Park.
Credited for Gaffer in 7 shows - The Sonny & Cher Show, Halloween, Halloween II, Amazons, Romancing the Stone, Project X and Agatha Christie's Poirot.