- A Big Sky Christmas, William W. Johnstone with J.A. Johnstone
- The first mountain man, Preacher's blood hunt, William W. Johnstone with J. A. Johnstone
- Johnstone, William W, Chuckwagon trail western
- By the neck, a Stoneface Finnegan western, William W. Johnstone and J.A. Johnstone
- Nathan Stark, army scout, William W. Johnstone with J.A. Johnstone
- Johnstone, William W, First mountain man (New York, N.Y.)
- A MacCallister Christmas, William W. Johnstone and J.A. Johnstone
- Johnstone, William W, Slash and Pecos, 4
- The devil you know, William W. Johnstone and J.A. Johnstone
- The First Mountain Man, Preacher's massacre, William W. Johnstone with J.A. Johnstone
- MacCallister, day of reckoning, by William W. Johnstone with J. A. Johnstone
- Johnstone, William W, Slash and Pecos western, 1
- Cutthroats, William W. Johnstone ; with J. A. Johnstone
- Johnstone, William W, Have brides, will travel western
- The butcher of Baxter Pass, by William W. Johnstone with J. A. Johnstone
- A Colorado Christmas, William W. Johnstone with J. A. Johnstone
- Flintlock, kill or die, by William W. Johnstone with J.A. Johnstone
- Johnstone, William W, Will Tanner, U.S. deputy marshal, 4
- Evil never sleeps, William W. Johnstone ; with J.A. Johnstone
- Colter's journey, William W. Johnstone with J. A Johnstone
- A Texas Hill country Christmas, William W. Johnstone with J. A. Johnstone
- Johnstone, William W, Slash and Pecos western, book 3
- The shotgun wedding, William W. Johnstone and J.A. Johnstone
- Cunning of the mountain man, William W. Johnstone
- Deadwood gulch, sidewinders, William W. Johnstone, with J.A. Johnstone
- Valor of the mountain man, William W. Johnstone
- A hill of beans, William W. Johnstone and J.A. Johnstone
- Old cowboys never die, William W. Johnstone and J.A. Johnstone
- Those Jensen boys!, William W. Johnstone with J.A. Johnstone
- Sons of thunder, William W. Johnstone and J.A. Johnstone
- Johnstone, William W, Sidewinders
- Sons of thunder, William W. Johnstone and J.A. Johnstone
- Matt Jensen, the last mountain man, by William W. Johnstone with J.A. Johnstone
- Johnstone, William W, Will Tanner, bk. 3
- Helltown massacre, the family Jensen, William W. Johnstone, with J.A. Johnstone
- Johnstone, William W, First mountain man (New York, N.Y.), 24
- An Arizona Christmas, William W. Johnstone with J.A. Johnstone
- A lone star Christmas, William W. Johnstone with J.A. Johnstone
- Johnstone, William W, Those Jensen boys! (Series)
- Sawbones, William W. Johnstone ; with J.A. Johnstone
- The trail west, William W. Johnstone with J. A. Johnstone
- A Death Valley Christmas, William W. Johnstone and J.A. Johnstone
- Johnstone, William W, Last mountain man
- Johnstone, William W, Trail west (Series)
- The wicked die twice, William W. Johnstone and J. A. Johnstone
- Johnstone, William W, Slash and Pecos western, book 2
- The edge of violence, a Tim Colter western, by William W. Johnstone ; with J.A. Johnstone
- Cutthroats, William W. Johnstone and J.A. Johnstone
- Powder burn, William W. Johnstone with J. A. Johnstone
- Johnstone, William W, Tim Colter western