We are told that it was by Bob Denver's insistence that "and the rest" was changed to "the Professor and Mary Ann," and that when the studio balked at rerecording the song he said "Include them or remove me."
I did not know that Dawn Wells had her turn as the lead in They're Playing Our Song on Broadway. (And I read just now that she spent years touring the country in musicals.)
I had somehow never noticed before that Shirley Jackson uses semicolons in dialogue; she gets away with it.
[I still don't recommend their use in dialogue.]
When I was (carefully) copyediting the volume of SJ's work we published as Let Me Tell You, I recall encountering two extremely lengthy multiclause sentences held together by a single semicolon, and to be honest my response was: