The Brave Ones: The Journals of the 1911-12 Expedition Down the Green and Colorado Rivers (Colorado River Chronicles, 1)
William C. Suran is the author of The Kolb Brothers of Grand Canyon: Being a Collection of Tales of High Adventure, Memorable Incidents, & Humorous Incidents; and With the Wings of an Angel: A Biography of Ellsworth and Emery Kolb, Photographers of Grand Canyon (available as a free download from the website of Grand Canyon Historical Society.)