There were few television westerns in which Simon did not guest star. From 1956 to 1970, he appeared in Broken Arrow, Disneyland, Dick Powell's Zane Grey Theater, Laramie, Black Saddle, Law of the Plainsman, Johnny Ringo, Cheyenne, and The Dakotas, Wichita Town, The Man From Blackhawk, The Texan, Tombstone Territory, Tate, and Shotgun Slade, Stagecoach West, Bat Masterson, Lawman, Klondike, and Frontier Circus, Have Gun - Will Travel, Wagon Train, The Legend of Jesse James, The Road West, Gunsmoke, Laredo, The Virginian, Bonanza, and The Guns of Will Sonnett.