- Author: Gifford Pinchot (editor), Char Miller (editor)
- Language: English
- Year: 2017
- Author: Gifford Pinchot, Char Miller
- Language: English
- Year: 2017
- Author: Gifford Pinchot
- Language: English
- Year: 2004
- Author: Gifford Pinchot (auth.)
- Language: German
- Year: 1988
- Author: Gifford Pinchot Ron Pellman
- Language: English
- Year: 1999