How many movies have François Truffaut and Michel Girard collaborated on?

They have worked on 1 movie together! Their first movie together was The 400 Blows (1959) and was their highest rated movie together. They have not worked together since The 400 Blows (1959).

Crew
Director
Role
Child
Crew
Producer
Role
Man in Funfair (uncredited)
Crew
Screenplay
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Adaptation