| year of publication | ISBN | author(s) | title |
|---|---|---|---|
| 2008 | 978-0-9816713-0-7 | David C. Hilbert | How to Sell Your Digital Travel Photos |
| 2014 | 978-0-9816713-1-4 | David Rice · David Hilbert | Stranded In Chicken: Backpacking The Americas By Bus, Prudhoe Bay To Antarctica |
| '' | 978-0-9816713-3-8 | David Hilbert | Make And Sell Digital Travel Photos: How To Make and Sell Digital Travel Photos |