* The Mennonites (2001)
* Time Circle (2004)
* Charlie: The Unlikely Legend of Charles "Crazy Horse" Thompson (2007)
* Dead End Alley (2011)
* When the Bottom Fell Out (2014)
Nonfiction
* The Cowboy Life (1989)
* Wild Rides: The Fast Life and Tough Times of a World-Champion Bareback Bronc Rider (1994)
* The Last Horseman: The Life of a Modern-Day Cowboy (1998)
* The Cowboy Artist: The Life and Times of Charles M. Russell (2002)
* The American Cowboy (2004)
* The Cowboy Way: An Enduring Legacy of Western Values (2011)
* Cowboys & Mustangs: Tales of the Wild West (2014)
* The Cowboy Spirit: The Enduring Legacy of the American West (2017)
Children's books
* Buster the Great! (2005)
* Buster Makes a Wish (2007)
* Buster and the Bad Day (2009)
* Buster Takes a Trip (2011)
* Buster Makes Friends (2013)
Other works
* The Western Reader: A Celebration of the American West (2004, editor)
* The Cowboy Reader: Stories, Essays, and Poems from the American West (2007, editor)
* The Horse Reader: Stories, Essays, and Poems from the American West (2009, editor)
* The Adventure Reader: Stories, Essays, and Poems from the American West (2011, editor)