That Little Old Matchmaker, Martin - S1-E12
Character mistake: In Bill's office, after Tim talks about the acoustics in the building, Bill calls Tim "Bill." (00:15:51)
Revealing mistake: Patty Duke's stand-in is visible behind Cathy when the family is in the front hall welcoming their aunt.
Spur Line to Shady Rest - S1-E1
Continuity mistake: When the Cannonball is preparing to leave, Uncle Joe has his hat. When the scene cuts to him helping Kate onto the Passenger Car, his hat is suddenly missing and nowhere to be seen.