| year of publication | ISBN | author(s) | title |
|---|---|---|---|
| 2007 | 978-0-9820818-0-8 | Daniel Sedwick ยท Frank Sedwick | The Practical Book of Cobs 4th Edition |
| 1991 | 978-0-9820818-1-5 | Frank Sedwick | The Gold Coinage of Gran Colombia (Colombia, Ecuador, Venezuela) |
| 2010 | 978-0-9820818-2-2 | Agustin A. Garcia Barneche | The Tumbaga Saga: Treasure of the Conquistadors |