 During the 1920s, Rathbone appeared regularly in Shakespearean and other roles on the British stage.He began to travel and appeared at the Cort Theatre, New York, in October 1923 in a production of "The Swan" opposite Eva Le Gallienne, which made him a star on Broadway.He toured in the United States in 1925, appearing in San Francisco in May and the Lyceum Theatre, New York, in October.