There's a blooper in this show.
Neighbor Henry Pearson calls his wife Linda Pearson "Florence" which is her real name Florence MacMichael (about 11 minutes in) . She is known to me as the neighbor of Mr Ed ...

Very good catch of a Season 1 error. Bub refers to her once as "Flo."

I was watching today "Polly Wants a Douglas," Season 11. Early on, Polly's mom shows Barbara the bankbook of Chip & Polly, and it's clearly stated they have saved only "nine dollars." But on a couple of occasions later in the ep, they have "ninety dollars." Maybe I'm missing something...?