1905, p. 483. J. Grivin Peters, Waste in Logging Southern Yellow Pine.
1905, p. 636. Quincy R. Craft, Progress of Forestry in 1905.
1907, p 277. Raphael Zon and E. H. Clapp, Cutting Timber in the National Forests.
U. S. Department of Agriculture, Division of Entomology Bulletins:
No. 11. n. s. L. O. Howard, The Gypsy Moth in America.
No. 28. A. D. Hopkins, Insect Enemies of the Spruce in the Northeast.
No. 32. n. s. A. D. Hopkins, Insect Enemies of the Pine in the Black Hills Forest Reserve.
No. 48. A. D. Hopkins, Catalog of Exhibits of Insect Enemies of Forest and Forest Products at the Louisiana Purchase Exposition, St. Louis, Mo., 1904.
No. 56. A. D. Hopkins, The Black Hills Beetle.
No. 58. Part 1, A. D. Hopkins, The Locust Borer.