- Author: William Leonard Langer
- Language: English
- Year: 1929
- Author: William L. Langer (editor), Carl E. Schorske (editor), Elizabeth Schorske (editor)
- Language: English
- Year: 1969
- Author: William L. Langer
- Language: English
- Year: 1968
- Author: William L. Langer, S. Everett Gleason
- Language: English
- Year: 1953
- Author: William L. Langer
- Language: English
- Year: 1969