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Publication Order of The Derby Man Books
| The Derby Man | (1976) | Hardcover  Paperback  Kindle |
| Showdown at Snakegrass Junction | (1978) | Hardcover  Paperback  Kindle |
| Mustang Fever | (1980) | Hardcover  Paperback  Kindle |
| The Pony Express War | (1980) | Hardcover  Paperback  Kindle |
| Silver Shot | (1980) | Hardcover  Paperback  Kindle |
| Explosion at Donner Pass | (1981) | Hardcover  Paperback  Kindle |
| The Rail Warriors | (1982) | Hardcover  Paperback  Kindle |
| North Chase | (1982) | Hardcover  Paperback  Kindle |
| Rebel of Bodie | (1982) | Hardcover  Paperback  Kindle |
| Whiskey Creek | (1992) | Hardcover  Paperback  Kindle |
| The Comstock Camels | (1993) | Hardcover  Paperback  Kindle |
Publication Order of Gunsmoke Books
| Gunsmoke | (1998) | Hardcover  Paperback  Kindle |
| Dead Man’s Witness | (1999) | Hardcover  Paperback  Kindle |
| Marshal Festus | (1999) | Hardcover  Paperback  Kindle |
Publication Order of The Horsemen Books
| The Horsemen | (1992) | Hardcover  Paperback  Kindle |
| Cherokee Lighthorse | (1992) | Hardcover  Paperback  Kindle |
| Texas Mustangers / The Mustangers | (1993) | Hardcover  Paperback  Kindle |
| Blue Bullet | (1993) | Hardcover  Paperback  Kindle |
| The Ambushers | (1994) | Hardcover  Paperback  Kindle |
| Stallion Valley | (1994) | Hardcover  Paperback  Kindle |
Publication Order of Maddie O’Brien Books
| Maddie O’Brien’s Christmas Donkey | (2010) | Hardcover  Paperback  Kindle |
| Maddie O’Brien’s Wild Turkeys | (2012) | Hardcover  Paperback  Kindle |
Publication Order of Medicine Wagon Books
| The Fighting Doctor | (2016) | Hardcover  Paperback  Kindle |
| Teton Mountain Fever | (2016) | Hardcover  Paperback  Kindle |
| Trouble in the Teton Valley | (2016) | Hardcover  Paperback  Kindle |
Publication Order of National Parks Historical Fiction Books
| Grand Canyon Thunder | (2011) | Hardcover  Paperback  Kindle |
| Mesa Verde Thunder | (2011) | Hardcover  Paperback  Kindle |
| Yellowstone Thunder | (2011) | Hardcover  Paperback  Kindle |
| Yosemite Thunder | (2011) | Hardcover  Paperback  Kindle |
| River Thunder | (2011) | Hardcover  Paperback  Kindle |
Publication Order of Rivers West Books
| The Smoky Hill | (1989) | Hardcover  Paperback  Kindle |
| The Colorado | (1989) | Hardcover  Paperback  Kindle |
| The Russian River | (1991) | Hardcover  Paperback  Kindle |
| The Arkansas River | (1991) | Hardcover  Paperback  Kindle |
| The American River | (1992) | Hardcover  Paperback  Kindle |
| The Two Medicine River | (1993) | Hardcover  Paperback  Kindle |
| The Gila River | (1993) | Hardcover  Paperback  Kindle |
| The Rio Grande | (1994) | Hardcover  Paperback  Kindle |
| The Columbia River | (1995) | Hardcover  Paperback  Kindle |
| The Humboldt River | (1996) | Hardcover  Paperback  Kindle |
| The Purgatory River | (1997) | Hardcover  Paperback  Kindle |
| The South Platte | (1998) | Hardcover  Paperback  Kindle |
| The Cimarron River | (1998) | Hardcover  Paperback  Kindle |
| The Brazos | (1999) | Hardcover  Paperback  Kindle |
Publication Order of Sisters of Wyoming Books
| Sisters of the Wyoming Mountains | (1984) | Hardcover  Paperback  Kindle |
| Sisters Of the Wyoming Plains | (1985) | Hardcover  Paperback  Kindle |
Publication Order of Standalone Novels
| The First Sheriff | (1979) | Hardcover  Paperback  Kindle |
| Winds of Gold | (1980) | Hardcover  Paperback  Kindle |
| Legend of the Lone Ranger | (1981) | Hardcover  Paperback  Kindle |
| Silver Winds | (1983) | Hardcover  Paperback  Kindle |
| Wind River | (1984) | Hardcover  Paperback  Kindle |
| Powder River | (1985) | Hardcover  Paperback  Kindle |
| The Last Buffalo Hunt | (1985) | Hardcover  Paperback  Kindle |
| Mando | (1986) | Hardcover  Paperback  Kindle |
| Transcontinental | (1987) | Hardcover  Paperback  Kindle |
| Sodbuster | (1988) | Hardcover  Paperback  Kindle |
| Blood Brothers | (1989) | Hardcover  Paperback  Kindle |
| The Gringo Amigo | (1991) | Hardcover  Paperback  Kindle |
| Yosemite | (1995) | Hardcover  Paperback  Kindle |
| Grand Canyon | (1996) | Hardcover  Paperback  Kindle |
| Mesa Verde | (1997) | Hardcover  Paperback  Kindle |
| Yellowstone | (1998) | Hardcover  Paperback  Kindle |
| Bordertown Justice | (2000) | Hardcover  Paperback  Kindle |
| The Buffalo Hunters | (2002) | Hardcover  Paperback  Kindle |
| Restitution | (2003) | Hardcover  Paperback  Kindle |
| Colter’s Hell | (2009) | Hardcover  Paperback  Kindle |
| Joaquin Murieta Was My Friend | (2011) | Hardcover  Paperback  Kindle |
| Charlie Coyote | (2013) | Hardcover  Paperback  Kindle |
| Isaac Beard & Sons | (2013) | Hardcover  Paperback  Kindle |
| Gold & Lace | (2014) | Hardcover  Paperback  Kindle |
| Elvis & Cowboy Charlie: The What If Novel | (2014) | Hardcover  Paperback  Kindle |
| Satin and Silver | (2015) | Hardcover  Paperback  Kindle |
| The Horsemen & The Derby Man | (2021) | Hardcover  Paperback  Kindle |
Publication Order of Our American West Books
| Our American West | (2012) | Hardcover  Paperback  Kindle |
| Our American West – Volume II | (2012) | Hardcover  Paperback  Kindle |
| Our American West – Volume III | (2012) | Hardcover  Paperback  Kindle |
| Our American West Volume IV | (2012) | Hardcover  Paperback  Kindle |