Trees and Shrubs, By George A. Petrides. 1986. 428 pages. Presents the identification of trees, shrubs and woody vines according to visual similarities and differences, in an area north to Newfoundland, south to North Carolina and Tennessee, and west to the Dakotas and Kansas.
Eastern Forests, By John C. Kricher. 1988. 360 pages. Describes and illustrates all of the forest communities found east of the Rockies. Over 600 illustrations show the key plants, animals and ecological patterns that can be seen in eastern forests and fields throughout the season.
Eastern and Western Trees, By George A. Petrides. Eastern Trees gives detailed descriptions of 455 species in an area north of the Arctic Ocean, south to the Gulf Coast and Florida and west to the Great Plains. There are 266 range maps. 1988. 272 pages. Western Trees gives detailed descriptions of 387 species in an area from the arctic tree line of Alaska and Canada to northern Mexico. 1992. 308 pages.