• LaBonte, George A.
  Maine Forestry Department
  
• Stark, Douglas A.
  Maine Forestry Department
  
• Nash, Robley W.
  Maine Forestry Department
  

This edition is the second one issued as a numbered bulletin, and, except for many improved sketches of leaves, is essentially the same as the 1968 edition. Some details of previous editions are given on page 88. Retained are sketches of protected species and of poison-ivy and poison-sumac given at the beginning. The latter two are to warn people, before they pick up such specimens for identification, from receiving unwanted results from handling the two plants. Added in this edition are Properties of Wood, Firewood, and a group listing of native and exotic trees and some native shrubs and hybrids.