| year of publication | ISBN | author(s) | title |
|---|---|---|---|
| 1995 | 978-0-941952-40-8 | Phil Walthers | Walthers 1995 HO catalog |
| 1996 | 978-0-941952-46-0 | Dean A. Freytag | The History, Making & Modeling of Steel |
| 2004 | 978-0-941952-71-2 | Phil Walthers | Walthers N & Z 2004 Model Railroad Reference Book |
| 2006 | 978-0-941952-74-3 | '' | Walthers Ho 2006 (Model Railroad Reference Book) |
| 2005 | 978-0-941952-75-0 | '' | Walthers 2006 N&Z Railroad Reference Book |
| 2006 | 978-0-941952-76-7 | Walthers 75th Anniversary Edition 2007 HO model Railroad reference Book | |
| '' | 978-0-941952-77-4 | Phil (ed). Walthers | Walthers 75th Anniversary Edition 2007 N&Z Model Railroad reference Book |