Woodwork Patterns : Fun family projects : [15 great ideas that mom, dad, and kids can build and enjoy] / projects by Edward Potokar ; photographs by Wendell T. Webber ; illustrations by Carl Wiens ; edited by Hylah Hill and Mark Powers.
--classes, orders, species, etc. of trees, e.g. Elm, Pine, Spruce
Woody Plants North America Identification : Fruit key and twig key to trees and shrubs : fruit key to northeastern trees and twig key to the desiduous wood plants of eastern North America / William M. Harlow.