| title | ISBN-13 (ISBN-10) | year of publica- tion | other author(s) |
|---|---|---|---|
| Greenberg's Pocket Guide: Marx Trains | 978-0-89778-437-5 (0-89778-437-5) | 1997 | Kent J. Johnson |
| Greenberg's Pocket Price Guide, Lionel Trains 1901-1996 | 978-0-89778-403-0 (0-89778-403-0) | 1995 | Kent J. Johnson · Kent, J. Johnson · Todd R. Wagner |