Dirr's Encyclopedia of Trees and Shrubs
Plant Identification Terminology: An Illustrated Glossary
Botany for Gardeners, 3rd Edition
The Reference Manual of Woody Plant Propagation: From Seed to Tissue Culture, Second Edition
The Tree Book: Superior Selections for Landscapes, Streetscapes, and Gardens
Pruning and Training, Revised New Edition: What, When, and How to Prune
Newcomb's Wildflower Guide
Landscape Graphics: Plan, Section, and Perspective Drawing of Landscape Spaces
Dirr's Hardy Trees and Shrubs: An Illustrated Encyclopedia
Diseases of Trees and Shrubs (Comstock Book)