| year of publication | ISBN | author(s) | title |
|---|---|---|---|
| 1990 | 978-0-9626996-2-7 | Angelo A Rosato | Encyclopedia of the Modern Elongated: A complete and authentic description of all modern elongateds, 1960-1978 |
| 1998 | 978-0-9626996-4-1 | '' | Supplement to The encyclopedia of the modern elongated: A complete and authentic description of modern elongated coins, 1978-1995 |