21. Forestry and forest products; compiled by Harold S. Betts, C. W. Boyce, Mrs. J. E. Haupt, Rufus Helphenstine, jr., Joseph Kittredge, Wilbur R. Mattoon, Alice M. Meynes, Albert H. Pierson, R. V. Reynolds, Helen Smith, W. N. Sparhook [Sparhawk], E. B. Stabler, Ansel D. Talbert, C. R. Tillotson, Raphael Zon, Joseph A. Becker, Lewis B. Flohr, and Birdella Miller. Bookmark Corporate/Agency Authors: Forest Service and Agriculture Department Publisher: Forest Service Date: 1924 SuDoc number: A 1.10/a:904