How many movies have Halsted Sullivan and Tod Browning collaborated on?

They have worked on 1 movie together! Their first movie together was Intolerance: Love's Struggle Throughout the Ages (1916) and was their highest rated movie together. They have not worked together since Intolerance: Love's Struggle Throughout the Ages (1916).

Crew
Assistant Property Master
Crew
Screenplay
Role
Crook (uncredited)
Crew
Second Assistant Director