The bar in which Pete finds George drunk was the set used for Pete's own apartment, slightly redressed.
Deja vu all over again for Sharon Acker (Agnes Carter). A couple years earlier Acker played a wife whose husband was the target of threatening phone calls and death threats in To Taste of Death But Once (1970).
Child actor Michael-James Wixted, who played Jimmy Carter, son of Andy Griffith, was at this same time playing the kid brother of Ron Howard on The Smith Family (1971). (Howard played Griffith's son Opie on The Andy Griffith Show (1960)).