Whitney also appeared on such series as The Public Defender, Gunsmoke, Adventures of Superman, City Detective, Fury, My Friend Flicka ("A Case of Honor"), The Californians, Sheriff of Cochise, Behind Closed Doors, Northwest Passage, Tate, Tombstone Territory (episode "Apache Vendetta"), Johnny Ringo, Riverboat, Bourbon Street Beat, The Alaskans, Overland Trail (as Governor Sutcliff in episode "First Stage to Denver"), The Rebel, The Islanders, Adventures in Paradise, Straightaway, Wagon Train, The Untouchables, Bonanza, The Monkees, Petticoat Junction (as Jasper Tweedy, in the 1969 episode: "Sorry Doctor, I Ain't Taking No Shots"), Green Acres, The Beverly Hillbillies, Rawhide (episode "Incident of the Music Maker"), and Hawaii Five-O. In addition, Whitney played a French partisan fighter named Massine in the 1963 episode "Thunder from the Hill" of ABC's military drama Combat!, as well as the character Caleb Calhoun in a 1964 episode of the Daniel Boone series. Then, in 1965, Whitney was cast as Judge Roy Bean in the episode "A Picture of a Lady" on the syndicated television series Death Valley Days, then hosted by Ronald W. Reagan. Francine York played Lily Langtry in that episode, and Paul Fix assumed the role of as the judge's friend, Doc Lathrop.