Future Oscar winner Jodie Foster had signed with H-B to do The New Scooby-Doo Movies episode, "Wednesday is Missing", taking over for Ken Weatherwax as Pugsley, and reprised in the subsequent series. Jackie Coogan (Uncle Fester) & Ted Cassidy (Lurch) returned as the only core cast members carrying over from the Addams' meeting with Mystery Incorporated. H-B's grand dame, Janet Waldo voiced both Morticia & Grandmama, doing a near-perfect mimic of Carolyn Jones as Morticia. Len Weinrib (Inch High, Private Eye) was cast as Gomez, and anyone expecting Astin to return was wishing he did. Astin finally did in the 1991 series.
There are a few episodes now available on Dailymotion, but in black & white, due to the simple fact that getting the original color prints is very difficult, even with the series released on DVD through Warner Archive a couple of years back.
In this episode, the Addams Family makes one last trip out west....
As was the case a year earlier (and would be again in '91), H-B used Charles Addams' original designs for the Addams brood, but also added the pets that weren't part of the 1964-6 live-action series.