Cathy did not appear in this episode.
This is the fifth of six credited appearances Robyn Millan makes in the series, each time playing Roz, a schoolmate for Patty and Cathy.
This is the second of three appearances Kathy Garver makes in the series, always playing Monica Robinson. She is perhaps best known for her recurring role as Cissy in the family TV sitcom Family Affair (1966), which began airing in the fall of 1966, just a few months after her last appearance in this series.
Adjusted for inflation, the $50 Patty proposes to spend on a cook would equal approximately $460 in the year 2023.
This is one of the few times in the series where William Schallert doubles as Martin and another character. In season one, he plays his brother Kenneth, as well as Martin, in two episodes: The Christmas Present (1963) and Auld Lang Syne (1964). His doubling as Uncle Jed is also the only time that he is the only one doubling for another character. Patty Duke plays only Patty in this episode.