British actress Susannah York, who was nominated for a best supporting actress Oscar in 1969 for They Shoot Horses, Don't They? and appeared in dozens of films and television shows on both sides of the Atlantic during her career, has died of cancer in London at age 72. In 1968 she co-starred with Beryl Reid in The Killing of Sister George, one of the first mainstream films to deal openly with lesbian relationships. (A sex scene in the film was deleted in Connecticut by order of state police.) She also starred memorably in Robert Altman's Images in 1972 and appeared as Superman's mother in the first two Superman movies starring Christopher Reeve.