L a · Lennie Abbott · Lon Abbott · Lynn Abbott
| title | ISBN-13 (ISBN-10) | year of publica- tion | other author(s) |
|---|---|---|---|
| Geology Underfoot Along Colorado's Front Range | 978-0-87842-595-2 (0-87842-595-0) | 2012 | Terri Cook |
| Geology Underfoot in Northern Arizona | 978-0-87842-528-0 (0-87842-528-4) | 2007 | " |