How many movies have Helen Dickson and William H. O'Brien acted in together?

They have worked on 11 movies together! Their first movie together was Wells Fargo (1937) while their highest rated movie together was Witness for the Prosecution (1957). They have not worked together since Witness for the Prosecution (1957).

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Courtroom Spectator (uncredited)
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Barrister (uncredited)
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Symposium Guest (uncredited)
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Waiter at Party (uncredited)
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Old Lady (uncredited)
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Waiter (uncredited)
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Funeral Attendee (uncredited)
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Townsman (uncredited)
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Wedding Guest (uncredited)
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Waiter (uncredited)
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Nightclub Patron (uncredited)
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Waiter at Party (uncredited)
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Opera Cast Member (uncredited)
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Recording Lab Assistant (uncredited)
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Party Guest (uncredited)
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Party Waiter (uncredited)