H.N. · Harry B. Nehls · Harry J. Nehls
| title | ISBN-13 (ISBN-10) | year of publica- tion | other author(s) |
|---|---|---|---|
| Birds of the Inland Northwest and Northern Rockies | 978-0-9640810-6-2 (0-9640810-6-7) | 2008 | Mike Denny · Dave Trochlell |
| Birds of the Willamette Valley Region | 978-0-9640810-4-8 (0-9640810-4-0) | 2004 | Tom Aversa · Hall Opperman |