Input (grade 13): Dufty, a New York Post writer and editor then married to Holiday's close friend Maely Dufty, wrote the book quickly from a series of conversations with the singer in the Duftys' 93rd Street apartment.
Output (grade 10): It was ghostwritten by William Dufty, a New York Post writer and editor who was married to Holiday's close friend Maely Dufty.