Also includes 9 USGS 1:100 000 - series metric topographic maps which index the panoramic images; four complete books from Grand Canyon history in pdf format: Exploration of the Colorado, Powell, Illustrated by Thomas Moran; A Canyon Voyage, Dellenbaugh; The Tertiary History of the Grand Canyon District, Dutton; Through the Grand Canyon from Wyoming to Mexico, Kolb; Stories of the author's adventures while hiking some of the most famous and difficult trails in the Canyon and much more.
