Boston: D.C. Heath & Co., 1894, c1893.

By: Spalding, Volney M. (Volney Morgan), - Chittenden, F. H. (Frank Hurlbut), - Fernow, B. E. (Bernhard Eduard), - Roth, Filibert, Edition: Rev. and enl. / by B.E. Fernow ; with contributions: Insect enemies of the White Pine, by F.H. Chittenden