H.H. · Harold Holt · R. H. · R. Holt
| title | ISBN-13 (ISBN-10) | year of publica- tion | other author(s) |
|---|---|---|---|
| A Birder's Guide to Colorado | 978-1-878788-05-4 (1-878788-05-1) | 1997 | |
| A Birder's Guide to Southeastern Arizona | 978-1-878788-22-1 (1-878788-22-1) | 2005 | Richard Cachor Taylor · James A. Lane |
| A Birder's Guide to the Rio Grande Valley of Texas (Lane ABA Birdfinding Guides Ser #414 | 978-1-878788-01-6 (1-878788-01-9) | 1992 | |