- The Joy of Forest Bathing: The Mysterious Japanese Art of Shinrin-Yoku
- City of Trees: The Complete Field Guide to the Trees of Washington, D.C., Third Edition (Center Books)
- A Year in Rock Creek Park: The Wild, Wooded Heart of Washington, DC
- Sugarloaf: The Mountain's History, Geology and Natural Lore
- Resilience:: Connecting with Nature in a Time of Crisis