Michael A. Dirr Photo-Library of Woody Landscape Plants on CD-Rom

The reference manual of woody plant propagation

Dirr's Trees and Shrubs for Warm Climates

Tree Book

Reference Manual of Woody Plant Propagation

Hydrangeas for American Gardens

Photographic Manual of Woody Landscape Plants

Dirr's Encyclopedia of Trees and Shrubs

Manual of woody landscape plants

Creative Home Landscaping

Manual of Woody Landscape Plants (Their Identification, Ornamental Characters, Culture, Propagation and Uses)