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.10, e-artnow
Madeleine Grynsztejn, Ellsworth Kelly, Julian Myers, San Francisco Museum of Modern Art (2002). “Ellsworth Kelly in San Francisco”, p.10, Univ of California Press
"White Privilege: Unpacking the Invisible Knapsack" by Peggy McIntosh, first appeared in Peace and Freedom Magazine (Philadelphia, PA), pp. 10-12, July/August 1989; later quoted in Thomas Norman DeWolf "Inheriting the Trade" (Chapter 4: The Great Folks), www.pbs.org. January 2, 2008.