| title | ISBN-13 (ISBN-10) | year of publica- tion | other author(s) |
|---|---|---|---|
| Michael M. Hickey's John Ringo: The Final Hours: A Tale of the Old West | 978-0-9631772-4-7 (0-9631772-4-9) | 2001 | Michael M. Hickey · Paul R. Taylor |
| The Clantons of Tombstone | 978-0-9631772-7-8 (0-9631772-7-3) | 1996 | |