How many movies have Henry Grace and Robert B. Williams collaborated on?

They have worked on 11 movies together! Their first movie together was Any Number Can Play (1949) while their highest rated movie together was North by Northwest (1959). They have not worked together since A Patch of Blue (1965). They are most known for their romance films together.

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First Train Conductor (uncredited)
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Oil Worker (uncredited)
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Patrolman Waggoner (uncredited)
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Night Motel Man (as Robert Williams)
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Jail Guard (uncredited)