Prominent film editor Thelma Schoonmaker spent much of her early career working on the films of Martin Scorsese. She met him during the '60s in a New York University film class. In 1968, she edited his directorial debut, Who's That Knocking at My Door? She and Scorsese co-edited Woodstock in 1970. Schoonmaker has since worked on every Scorcese film since 1980. 

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