| year of publication | ISBN | author(s) | title |
|---|---|---|---|
| 1996 | 978-1-880241-04-2 | Richard A. Wolinski | Bird Watchers Digest 325 Enjoying Purple Martins More Booklet |
| 2007 | 978-1-880241-12-7 | Bird Watchers Digest Press | Understanding Bats |
| 2002 | 978-1-880241-16-5 | Bill Thompson III | The Backyard Bird Watcher's Answer Guide |