| year of publication | ISBN | author(s) | title |
|---|---|---|---|
| 2010 | 978-0-9845054-0-1 | Gale Cooper | Billy the Kid's Pretenders Brushy Bill & John Miller |
| '' | 978-0-9845054-1-8 | Gale Susan Cooper | MegaHoax: The Strange Plot to Exhume Billy the Kid and Become President |
| 2012 | 978-0-9845054-2-5 | Gale Cooper | Billy the Kid's Writings, Words, and Wit |