Amber Rose Mason and John Marrs in Heart of the Gun (2021)

John Marrs in A Guide to Gunfighters of the Wild West (2021)

William Carr, J.D. Pepper, and John Marrs in The Pleasant Valley War (2021)

John Marrs in The Pleasant Valley War (2021)

Todd South, John Radspinner, and John Marrs in The Pleasant Valley War (2021)

William Carr, Nicholas R. Cox, J.D. Pepper, and John Marrs in The Pleasant Valley War (2021)

Michael P. Walker and John Marrs in The Pleasant Valley War (2021)

John Marrs in She Was the Deputy's Wife (2021)

Jay Pickett, Tom Dragt, Amber Rose Mason, Travis Mills, Michael P. Walker, and John Marrs in Heart of the Gun (2021)

Larry Judkins, Mike Doherty, Lisa Barnes, William Chandler, Beau Yotty, John Radspinner, and John Marrs in For the Reward (2022)

William Carr, J.D. Pepper, Kelly Kidd, Mark Henning, Todd South, Rod Rockman, Corey Busboom, John Schile, Michael P. Walker, John Marrs, and Ken Ronk in The Pleasant Valley War (2021)

Glen Gold, John Peacock, Maribel Jimenez, Diane Donato, Larry Judkins, J.D. Pepper, Diane Ouradnik, Jason Hunt, Ernest Marsh, Shanda Renee, John Schile, Travis Mills, Blaize Naasz, Andrew J. Gray, John Marrs, Beverly Guettler, Kim A. Williams, and Bill Womack in A Guide to Gunfighters of the Wild West (2021)

Travis Mills and John Marrs in A Guide to Gunfighters of the Wild West (2021)

Michael Estridge, Thomas Ramsey, William Shannon Williams, John Charles Dickson, John Marrs, and Wayne Lundy in Counting Bullets (2021)

Olivier Gruner, Matthias Hues, Alexander Nevsky, Joe Cornet, and John Marrs in Gunfight at Rio Bravo (2023)