| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| Ecological Investigations Upon the Germination and Early Growth of Forest Trees | 978-1-112-33005-6 (1-112-33005-4) | 2009 |
| Our National Forests: A Short Popular Account of the Work of the United States Forest Service on the National Forests | 978-1-112-36051-0 (1-112-36051-4) | 2009 |
(D-R) · H.D. · R.D. · R. H. · R.R. · Richard D. · Richard H. · Richard R.