"Why Can't My Feet Keep Time with Ralph's Ear?"
Episode: S01 Special | Airdate: Sep 2, 1971
Known as "The Curiosity Shop Special", it is the only time that Pam and Jere appear together, and the only episode that did not air on a Saturday. "Three Is A Magic Number" would be used for "Scholastic Rock" which debuted the following week.
A slightly edited version of this Special was converted to a regular episode for broadcast on Saturday Morning, September 04, 1971.
These two versions are confirmed to survive as both black and white kinescope film, and color tape.