6 books
To the South Seas; the Cruise of the Schooner Mary Pinchot to the Galapagos, the Marquesas and the Tuamotu Islands and Tahiti
The First Exposition of Conservation and Its Builders; an Official History of the National Conservation Exposition, Held at Knoxville, Tenn., in 1913 and of Its Forerunners, the Appalachian Expositions of 1910-11, Embracing a Review of the Conservation...
Practical Assistance to Tree Planters; Volume No.22
Forestry and the Lumber Supply; Volume No.25
The Fight for Conservation
Conservation as Practised