Westerfield's other appearances were on such series as The Rifleman, The Californians, Richard Diamond, Private Detective, The Alaskans, The Rebel, Straightaway, Going My Way, The Asphalt Jungle, Hazel, The Andy Griffith Show, Daniel Boone, The Beverly Hillbillies, and Gunsmoke. He played the circus leader, Dr. Marvello, in an episode of Lost in Space "Space Circus" (1966), My Three Sons "A horse for Uncle Charlie" (1968)