* 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
* Fjellene og himmelen
* The Happy Warrior:A Life of George S. Patton
* America's First Wilderness:The Historical Geography of Virginia, Maryland og Delaware
* Den store amerikanske skogen
* Historien om Amerikas nasjonalparker
* The Big Sky:A History of Colorado
* The Southwest:A History of the People
* The River and the Canyon:A History of the Colorado River and Glen Canyon
Essays og artikler
* "Betydningen av grensen i amerikansk historie"
* "Den amerikanske karakteren"
* "Vesten i amerikansk litteratur"
* "Nasjonalparkene:Et løfte oppfylt"
* "The Colorado River:A History of Conquest"
* "The Southwest:A Unique Region"
Noveller
* "Bjørnejakten"
* "Fjellmannen"
* "Den tapte gruven"
* "Spøkelsesbyen"
* "The Cattle Drive"
Poesi
* "The Great Plains"
* "The Rocky Mountains"
* "The Desert Southwest"
* "The Grand Canyon"
* "Stillehavet"