The voice-over narration breathlessly wonders, “How many girls in America wish they could literally fly from their hometowns to Hollywood to be cast in a leading role for a major motion picture?” Eager to introduce its newest star, Metro-Goldwyn-Mayer asked this question in 1965, in the short promotional film “A Cinderella Named Elizabeth.” This Cinderella, living a “dream come true,” was 21-year-old Elizabeth Hartman, fresh from Youngstown, Ohio. She soon made her film debut opposite Oscar winner Sidney Poitier in the landmark tearjerker A Patch of Blue, the first major American movie to feature an interracial kiss.