Pilgrims' Process, Inc. · University Press of Colorado
| title | ISBN-13 | year of publica- tion | other author(s) |
|---|---|---|---|
| Bryophytes of Colorado: Mosses, Liverworts, and Hornworts | 978-0-9790909-1-2 | 2007 | Ronald C. Wittmann |
| Colorado Flora: Eastern Slope, Fourth Edition A Field Guide to the Vascular Plants | 978-1-60732-140-8 | 2012 | " |
| Colorado Flora: Eastern Slope, Third Edition | 978-0-87081-552-2 | 2001 | " |
| Colorado Flora: Western Slope | 978-0-87081-553-9 | 2001 | " |
| Colorado Flora: Western Slope, Fourth Edition A Field Guide to the Vascular Plants | 978-1-60732-142-2 | 2012 | " |
| King of Colorado Botany: Charles Christopher Parry, 1823-1890 | 978-0-87081-431-0 | 1997 | |
| Rocky Mountain Flora | 978-0-87081-068-8 | 1991 | |
| The Valley of the Second Sons: Letters of Theodore Dru Alison Cockerell, a young English naturalist, writing to his sweetheart and her brother about ... Wet Mountain Valley, Colorado 1887-1890 | 978-0-9710609-9-9 | 2004 | |
A. W. · A. Weber · W.A. · W.W. · W. Weber · William A. · William W. · William Weber