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
John Muir (2015). “STEEP TRAILS: California - Utah - Nevada - Washington - Oregon - The Grand Canyon: Adventure Memoirs, Travel Sketches, Nature Essays and Wilderness Studies from the author of The Yosemite, Our National Parks, A Thousand-mile Walk to the Gulf & Picturesque California”, p.67, e-artnow
Ed Viesturs, David Roberts (2011). “The Will to Climb: Obsession and Commitment and the Quest to Climb Annapurna--the World's Deadliest Peak”, p.87, Crown
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.721, Library of America
John Muir (2015). “JOHN MUIR’S CALIFORNIA COLLECTION: My First Summer in the Sierra, Picturesque California, The Mountains of California, The Yosemite & Our National Parks (Illustrated): Adventure Memoirs, Travel Sketches, Nature Writings and Wilderness Essays”, p.276, e-artnow