- Author: Paul Shepard
- Language: English
- Year: 1998
- Author: Paul Shepard
- Language: English
- Year: 1998
- Author: Paul Shepard, Florence R Shepard
- Language: English
- Year: 1998
- Author: Paul Shepard Jack Turner (introduction)
- Language: English
- Year: 1996
- Author: Paul Shepard, Florence R Shepard
- Language: English
- Year: 1998
- Author: Paul Shepard
- Language: English
- Year: 2004