Unnumbered Cir.—Timber preservation and timber testing at the Louisiana Purchase Exposition. 1904, pp. 6.
Cir. 32—Progress report on the strength of structural timber. By W.K. Hatt, 1904, pp. 28.
Bul. 58—The red gum. By Alfred Chittenden. Includes a discussion of The mechanical properties of red gum wood, by W.K. Hatt. 1905, pp. 56.
Cir. 38—Instructions to engineers of timber tests. By W.K. Hatt, 1906, pp. 55. Revised edition, 1909, pp. 56.
Cir. 39—Experiments on the strength of treated timber. By W.K. Hatt, 1906, pp. 31. Revised edition, 1908.
Bul. 70—Effect of moisture upon the strength and stiffness of wood. By H.D. Tiemann, 1906, pp. 144.
Cir. 46—Holding force of railroad spikes in wooden ties. By W.K. Hatt, 1906, pp. 7.
Cir. 47—Strength of packing boxes of various woods. By W.K. Hatt, 1906, pp. 7.
Cir. 108—The strength of wood as influenced by moisture. By H.D. Tiemann, 1907, pp. 42.
Cir. 115—Second progress report on the strength of structural timber. By W.K. Hatt, 1907, pp. 39.