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.
He grew up the eldest of ten children in South Oxford (now Webster), Massachusetts. He took his pen name from an American Indian who had befriended him in early childhood. He was fascinated by the few books about Indians that his family possessed that left him with an abiding interest in forest life and adventure. A period of factory labor while still a child left him with a fondness for the writing of Charles Dickens. At age twelve he started working in a commercial fishing fleet based on Cape Cod and at nineteen he signed on for a three-year voyage on a whaler headed for the South Pacific; it was the same year (1841) that Herman Melville shipped out of the same port bound for the same whaling grounds. On his return, his family moved to Wellsboro, Pennsylvania where he was to live for the rest of his life. However, he continued traveling for adventure, from the upper Midwest and Ontario to an Amazon tributary in Brazil (in 1867 and again in 1870).
