Ecology

Wild Spain (España agreste)

Trees of Indiana First Revised Edition (Publication No. 13, Department of Conservation, State of Indiana)

Scott Burton, Forester

The Story of a Thousand-Year Pine

Arbor Day Leaves

Mammals of Northwestern South Dakota

Last Leaves from Dunk Island

Literary Pilgrimages of a Naturalist

The Climate Change Hoax: The Global Warming Deception

The Life of the Fly; With Which are Interspersed Some Chapters of Autobiography

The life story of a squirrel

Lyrics of Earth

The Myxomycetes of the Miami Valley, Ohio

The Voyage of the Beagle

Excursions

Views of Nature – Contemplations on the Sublime Phenomena of Creation with Scientific Illustrations

The Eagle's Nest

Minnesota; Its Character and Climate

Woodcraft & Camping

Winter