Conifers of the Pacific Slope: A Field Guide to the Conifers of California, Oregon, and Washington
(Kneeland, CA): Backcountry Press, 2013. 144 pages. A guide to all the conifer species on the West Coast, including color plates for identifying 65 species, current range maps for each species, and color photographs of conifers in their native habitat from Baja California to British Columbia. ISBN: 9780939431403.