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

They have worked on 2 movies together! Their first movie together was The Great McGinty (1940) and was their highest rated movie together. They have not worked together since The Gay Sisters (1942).

Crew
Costume Design
Role
Fiona Gaylord as a Girl of 8
Crew
Costume Design
Role
Mary - Catherine's Girl, Age 6