| year of publication | ISBN | author(s) | title |
|---|---|---|---|
| 1992 | 978-0-9626531-1-7 | Robert Bahr | The Virility Factor: Masculinity Through Testosterone, the Male Sex Hormone |
| 1993 | 978-0-9626531-4-8 | Harold Litten | The Joy of Solo Sex |
| 1996 | 978-0-9626531-8-6 | '' | More Joy: An Advanced Guide to Solo Sex |