| title | ISBN-13 | year of publica- tion | other author(s) |
|---|---|---|---|
| Colorado Off the Beaten Path, 9th | 978-0-7627-4412-1 | 2007 | Eric Lindberg |
| Colorado Off the Beaten Path | 978-0-7627-3518-1 | 2005 | |
| Freelance Writing | 978-0-02-079290-1 | 1985 | |
| Summer Adventures | 978-0-02-079331-1 | 1994 | |