| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| Collecting and Investing Strategies for United States Gold Coins | 978-1-933990-10-1 (1-933990-10-4) | 2008 |
| Collecting and Investing Strategies for Walking Liberty Half Dollars | 978-1-933990-17-0 (1-933990-17-1) | 2008 |