W. H. Auden (1907–73) was an Anglo-American poet and a notable 20th-century literary figure. In the 1930s he was associated with Stephen Spender, Louis MacNeice, and Christopher Isherwood; with the last he wrote the verse plays The Dog Beneath the Skin (1935), The Ascent of F6 (1936), and On the Frontier (1938). Some of Auden's most original poetry appeared in the early 1930s. Later volumes, varying in subject from politics to psychology to Christianity, include The Double Man (1941), Collected Poetry (1945), The Age of Anxiety (1947; Pulitzer), Nones (1951), and About the House (1965). Additionally, he wrote critical essays and opera librettos. A United States resident from 1939 and citizen from 1946, Auden divided his final years among England, Italy, Austria, and New York.