How many movies have John C. Hartigan and Wanda 'Beau' Peterson collaborated on?

They have worked on 2 movies together! Their first movie together was Vendetta (1986) while their highest rated movie together was Halloween H20: 20 Years Later (1998). They have not worked together since Halloween H20: 20 Years Later (1998).

Crew
Special Effects
Crew
Art Department Assistant