| year of publication | ISBN | author(s) | title |
|---|---|---|---|
| 1990 | 978-0-915713-17-2 | Mallory Hope Ferrell | El Dorado narrow gauge: The Diamond & Caldor Railway |
| 1989 | 978-0-915713-19-6 | Charles Wood | Great Northern Railway |
| 1991 | 978-0-915713-21-9 | Jeff Asay | Union Pacific Northwest: The Oregon-Washington Railroad & Navigation Company |