He was featured several times on one of the iconic black and white TV series of the 1950s Adventures of Superman; his appearances are still seen on television today.

[1] Nelson and his wife, violinist Irene Knight, developed a musical comedy act that was featured in several major markets during the 1930s.

[2][3] The Nelson-Knight music and comedy duo often worked shows featuring vaudeville and Broadway ballerina Jeanne Devereaux.

[4] Frequently cast as a villain, Nelson was a familiar face during the infancy of network and syndicated television.

He played in roles on early television westerns and police procedurals,i.e., The Life and Legend of Wyatt Earp, Death Valley Days, Bat Masterson, Tombstone Territory, Highway Patrol, M Squad and Jack Webb's original Dragnet.