John Muir (2015). “THE YOSEMITE COLLECTION of John Muir (Illustrated): The Yosemite, Our National Parks, Features of the Proposed Yosemite National Park, A Rival of the Yosemite, The Treasures of the Yosemite, Yosemite Glaciers, Yosemite in Winter & Yosemite in Spring”, p.188, e-artnow