Wood Krutch (1893–1970) was an American writer, critic, and naturalist. Born in Knoxville, Tennessee, he initially studied at the University of Tennessee before receiving a master’s degree from Columbia University. He is the author of several books on a variety of topics, including biographies of Samuel Johnson and Henry David Thoreau. The Measure of
Man, which is perhaps his most enduring work, was published in 1954 and won the National
Book Award for Nonfiction the following year. After moving to Arizona in 1952, he wrote books on ecology,
the southwestern desert environment, and the natural history of the Grand Canyon, winning renown as a naturalist and conservationist.
Frederick G. Marcham is an ornithologist, naturalist, and professor of English history at Cornell University in Ithaca, New York.