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
Anita Loos unfair reimbursement and was subsequently replaced. The new assistant director had eyes for Loos, who had filed for divorce from her estranged first husband. Emerson proposed marriage. They were married at the Schenck estate on June 15, 1919. Loos was among the first to join Ruth Hale's Lucy Stone League, an organization that fought for women to preserve their maiden names after marriage. Hale, wife of playwright Heywood Broun had struggled to get a U.S. passport issued in her birth name. The couple moved into a modest Murray Hill apartment and cut back to two films a year in order