Awards and Honors
- O. Henry Short Story Award for "Humoresque," 1919
- Chair of National Housing Commission, 1936-37
- Authors Guild, president, 1937; vice-president, 1944-46, 1947
- Member of National Advisory Committee to Works Progress Administration, 1940-41
- Associate Trustee, Russell Sage College, 1947
- Trustee of Heckscher Foundation, 1949-60
- Delegate to World Health Organization Assembly, Geneva, 1952
- D.Litt., Washington University, St. Louis; and Fairleigh Dickinson University, 1953
- Ecole des Hautes Etudes, 1960