Coy also appeared on Jim Davis' western anthology series, Stories of the Century in the role of Sam Clayton in the 1954 episode entitled "Tom Horn," an account of the western lawman-turned outlaw Tom Horn. He appeared on many other western television programs, including Cheyenne, Bronco, Cimarron City, The Lone Ranger, The Life and Legend of Wyatt Earp (one episode as Ben Thompson), Shotgun Slade, The Deputy, Bonanza, Bat Masterson, The Adventures of Jim Bowie, Trackdown, Tales of Wells Fargo, Yancy Derringer, Laramie, Two Faces West, Lawman, Wanted: Dead or Alive, The Restless Gun, The Rough Riders, Dick Powell's Zane Grey Theatre, Pony Express, Rawhide, Mackenzie's Raiders, Have Gun – Will Travel, The Texan, The Man from Blackhawk, Hotel de Paree, Overland Trail, Maverick, The Virginian, The Big Valley, Laredo, The Outcasts, Wagon Train (five times), and Robert Conrad's The Wild Wild West.