How many movies have Edith Head and Mary Treen collaborated on?

They have worked on 16 movies together! Their first movie together was You Belong to Me (1941) while their highest rated movie together was Who's Minding the Store? (1963). They have not worked together since Paradise, Hawaiian Style (1966). They are most known for their comedy films together.

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Mrs. Stevers (uncredited)
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Commissary Cashier
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Marie, Secretary to Shirley Drake
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Ms. Regan (uncredited)
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Cecilia 'Cissy' Grant