Mary Loos Mary Loos Mary Loos (May 6, 1910 – October 11, 2004) was an American actress, screenwriter and novelist. She was occasionally credited under her full name, Mary Anita Loos. Born in San Diego, she was the daughter of Dr. Clifford Loos, co-founder of the Ross-Loos Medical Clinic and the Ross-Loos Medical Group, the first Health maintenance organization (HMO) in the United States. She was the niece of screenwriter Anita Loos. She was both co-creator and one of the writers for "Yancy Derringer" (1958-1959), an American Western TV series. Mary Loos died in Monterey, California, aged 94, due to complications following
Gentlemen Prefer Blondes (musical) was produced by Herman Levin and Oliver Smith, directed by John C. Wilson, and choreographed by Agnes de Mille, with vocal direction by Hugh Martin. Financial backers included Harold M. Esty, Jr. The original cast featured: Several well-known blonde actresses, including Betty Hutton, Jayne Mansfield (Carousel Theater, 1964), Mamie Van Doren, Barbara Eden (Florida, January 1999) and Morgan Fairchild, have starred in regional and summer stock productions of "Gentlemen Prefer Blondes" over the years. The musical ran in the West End at the Princes Theatre, opening on August 20, 1962 for 223 performances, and featured Dora Bryan as Lorelei Lee,