"A 4th Course of Chicken Soup for the Soul: More Stories to Open the Heart and Rekindle the Spirit". Book by Jack Canfield (p. 188), September 1, 2012.
John Muir (2015). “John Muir’s Incredible Travel Memoirs: A Thousand-Mile Walk to the Gulf, My First Summer in the Sierra, The Mountains of California, Travels in Alaska, Steep Trails… (Illustrated): Adventure Memoirs & Wilderness Studies from the Naturalist, Environmental Philosopher and Early Advocate of Preservation of Wilderness, the Author of The Yosemite and Picturesque California”, p.521, e-artnow