- The lonesome gun, William W. Johnstone and J.A. Johnstone
- The devil's boneyard, William W Johnstone and J. A. Johnstone
- A month of doomsdays, a Brannigan's land western, William W. Johnstone, J. A. Johnstone
- A hill of beans, William W. Johnstone and J.A. Johnstone
- Johnstone, William W, Perley Gates western, bk. 7
- Forever Texas, William W. Johnstone, J.A. Johnstone
- Johnstone, William W, Have brides, will travel western
- Johnstone, William W, Preacher & MacCallister western, 1
- Johnstone, William W, Slash and Pecos western, bk. 2
- Death & Texas, William W. Johnstone and J.A. Johnstone
- Hell for breakfast, William W. Johnstone and J.A. Johnstone
- The fires of Blackstone, William W. Johnstone and J.A. Johnstone
- Fort Misery, William W. Johnstone and J.A. Johnstone
- Johnstone, William W, First mountain man (New York, N.Y.), 29
- Johnstone, William W, Brannigan's land series, 3
- Death & Texas, William W. Johnstone and J. A. Johnstone
- They called him Preacher, William W. Johnstone
- Trigger warning, William W. Johnstone ; with J.A. Johnstone
- Johnstone, William W, Sawbones, 1
- A MacCallister Christmas, William W Johnstone and J. A. Johnstone
- A hill of beans, William W. Johnstone and J. A. Johnstone
- Frontier America, William W. Johnstone ; and J.A. Johnstone
- The devil to pay, William W. Johnstone with J.A. Johnstone
- Johnstone, William W, Kerrigans, a Texas dynasty
- Butch Cassidy, the lost years, William W. Johnstone with J.A. Johnstone
- The chuckwagon trail, William W. Johnstone with J.A. Johnstone
- Preacher's purge, William W. Johnstone and J. A. Johnstone
- The Frontier Overland Company, William W. Johnstone and J.A. Johnstone
- Johnstone, William W, Slash and Pecos western, [1]
- Johnstone, William W, Perley Gates western
- Johnstone, William W, Fort Misery western, bk. 1
- Sawbones, William W. Johnstone with J.A. Johnstone
- BAD HOMBRES
- Cutthroats, William W. Johnstone and J.A. Johnstone
- Johnstone, William W, Slash and Pecos western, book 2
- Taylor Callahan, circuit rider, William W. Johnstone and J. A. Johnstone
- Johnstone, William W, Ben Savage, saloon ranger western, 2
- Nice guys finish dead, William W. Johnstone and J.A. Johnstone
- Johnstone, William W, Will Tanner, U.S. deputy marshal, 4
- The shotgun wedding, William W. Johnstone and J.A. Johnstone
- A reason to die, a Perley Gates western, William W. Johnstone ; with J.A. Johnstone
- The last gunfighter, by William W. Johnstone
- Johnstone, William W, Death & Texas western, 1
- The devil you know, William W. Johnstone and J.A. Johnstone
- Mean and evil, a Brannigan's land western, William W. Johnstone and J. A. Johnstone
- Springfield 1880, William W. Johnstone with J.A. Johnstone
- Evil never sleeps, William W. Johnstone ; with J.A. Johnstone
- Hunter's moon, William W. Johnstone and J.A. Johnstone
- Johnstone, William W, Chuckwagon Trail, bk. 1
- A good day for a massacre, William W. Johnstone and J. A. Johnstone