John Muir (1997). “Nature Writings: The Story of My Boyhood and Youth, My First Summer in the Sierra, the Mountains of California, Stickeen, Selected Essays”, p.237, Library of America
John Alan Walker, William Wendt (1992). “Documents on the Life and Art of William Wendt, 1865-1946, California's Painter Laureate of the Paysage Moralisé”