 The character name Superintendent Frank Morgan in later episodes of  Season 2 was a tribute to 1970s police series  _"Sweeney, The" (1975)_ (qv) in which Superintendent Frank Haskins  was played by actor Garfield Morgan (qv). Also,  Frank Morgan (I) (qv) was the actor who played the Wizard in  _Wizard of Oz, The (1939)_ (qv).