- Author: Robert Easton, Donald Mackenzie Brown, Jack Schaefer
- Language: English
- Year: 1970
- Author: Utley Robert Marshall
- Language: English
- Year: 1984
- Author: Smith Jedediah Strong, Smith Jedediah S., Morgan Dale Lowell
- Language: English
- Year: 1964
- Author: John C. Cremony
- Language: English
- Year: 1983
- Author: Graham Wallas
- Language: English
- Year: 1962
- Author: Arthur A. Ekirch Jr.
- Language: English
- Year: 1973
