For those that are curious, yes Jocelyn Brando is indeed the older sister of Hollywood legend Marlon Brando. She was in fact four years older.
Veteran character actor Robert Shayne (1900-92) had a long career in supporting roles, but is best remembered for a role he took in the infant medium of television; that of Police Inspector Bill Henderson in "The Adventures Of Superman" (1951-58) starring the late George Reeves.
The role of Mike's friend Howard is now played by actor Buck Taylor, best known for his recurring role as Newly O'Brien in the popular western series "Gunsmoke", instead of Beau Bridges who had previously played it. (He appears again in Episode #182).