Sears was probably the most well-known outdoorsman of his day, and contributed a great deal of knowledge to the fields of woodcraft and camping. Below
you'll find a brief biography of him, and a link to a free, public domain version of his book Woodscraft and Camping. It makes a great read, and is
full of useful information.
Full Wikipedia Article

George Washington Sears (December 2, 1821 – May 1, 1890) was a sportswriter for Forest and Stream magazine in the 1880s and an early
conservationist. His stories, appearing under the pen name, "
Nessmuk" popularized self-guided canoe camping tours of the Adirondack lakes in
open, lightweight solo canoes and what is today called ultralight camping.
The Book