A blue and yellow plaque commemorates Tom Thomson, an acclaimed Canadian painter born in Claremont, Ontario County, and moved with his parents to Lethwood, where he lived until 1913. Tom worked as a commercial painter until 1913, supplemented his income from painting, and served as a guide and fire ranger in Algonquin Park. His work, including "The Groupe of Seven," "West Wind," and "Northern River," was greatly influenced by the Canadian wilderness, and he ended his career abruptly in July 1917 when he was struck by a bullet. The plaque is inscribed by the Ontario Archaeological and Historic Sites Board.