Nelson was cast in episodes of such other westerns as "Maverick", "Wagon Train", "Black Saddle", "Have Gun – Will Travel", "The Rebel" (five times), "Johnny Ringo", "Gunsmoke", "Rawhide", "Tombstone Territory", "Bat Masterson", "Laramie", "Bonanza", "Stoney Burke", "The Dakotas", "The Rifleman" and "Redigo". He appeared on drama and adventure series too, such as "Combat!", "The Fugitive", "The Twilight Zone", "Flight", "The Silent Service", "The Outer Limits", "Harbor Command", "Tightrope", "The Blue Angels", "Coronado 9", "The Eleventh Hour", "Thriller", and "Channing". He guest-starred on "" and military sitcom/drama "Hennesey".