The Michael McKensie Pratt Professional Papers (approximately 1950-2021) contain costume designs, musical selections, and synopsis for shows that Pratt worked on in Las Vegas, Nevada including 90 Degrees & Rising, Les Folies Chic, and Jubilee!. The collection also contains souvenir show programs for cabaret shows performed in Paris, France and Las Vegas, Nevada, including Lido de Paris, Casino de Paris, Bal du Moulin Rouge, and Folies Bergere. Materials also include copies of Pratt's curriculum vita and swing bible used by Pratt when he was the co-company manager for Jubilee!. Also included are video recordings of shows Pratt choreographed and an archived version of Pratt's personal website.
Mary Louise Williams was born on October 20, 1926 in Cleveland, Ohio to Carrie Randolph and Tom Forte. She was musically trained and first arrived in Las Vegas, Nevada in 1955 to work at the Moulin Rouge Hotel and Casino. Even though as a dancer she worked frequently in Las Vegas and visited the city many times, she didn't move to Las Vegas until her retirement from her career in social work and teaching in New York.