* The Last of the Great Scouts:The Life of William F. Cody
* The Enchanted Land:A Study of the History and Folklore of the Southwest
* Bergen och himlen
* The Happy Warrior:A Life of George S. Patton
* America's First Wilderness:The Historical Geography of Virginia, Maryland och Delaware
* Den stora amerikanska skogen
* Historien om Amerikas nationalparker
* The Big Sky:A History of Colorado
* Southwest:A History of the People
* The River and the Canyon:A History of the Colorado River and Glen Canyon
essäer och artiklar
* "Gränsens betydelse i amerikansk historia"
* "Den amerikanska karaktären"
* "Västerlandet i amerikansk litteratur"
* "Nationalparkerna:Ett löfte uppfyllt"
* "The Colorado River:A History of Conquest"
* "The Southwest:A Unique Region"
Noveller
* "Björnjakten"
* "The Mountain Man"
* "Den förlorade gruvan"
* "Spökstaden"
* "The Cattle Drive"
Poesi
* "The Great Plains"
* "Klippiga bergen"
* "The Desert Southwest"
* "The Grand Canyon"
* "Stilla havet"