| year of publication | ISBN | author(s) | title |
|---|---|---|---|
| 1991 | 978-0-9626772-0-5 | John W. Evans | Powerful Rockey: The Blue Mountains and the Oregon Trail |
| '' | 978-0-9626772-1-2 | John W. Evans | Powerful Rockey: The Blue Mountains and the Oregon Trail |
| 1990 | 978-0-9626772-2-9 | John D. Trudel | High Tech With Low Risk (Venturing Safely into the 90s) |