Mark Lee Gardner is the author of Rough Riders, To Hell on a Fast Horse, and Shot All to Hell, which received multiple awards, including a Spur Award from Western Writers of America. An authority on the American West, Gardner has appeared on PBS's American Experience, as well as on the History Channel, the Travel Channel, and on NPR. He has written for the Los Angeles Times, True West, Wild West, American Cowboy, and New Mexico Magazine. He lives with his family in Cascade, Colorado.