During season 1, in Part-Time Genius (1958), John Hoyt played a doctor. During season 2, in Wally's New Suit (1958), he played a clothing store salesman. Here, in his third and final appearance in the series, he plays a collection agent representing the accordion company.
The same theme of Beaver getting in over his head with a mail-order purchase occurs again during season 6, in Beaver Joins a Record Club (1962).
When Ward tells June where she can find an extension cord, heard among the canned laughter is a woman exclaiming "Uh-oh!" The woman is DeDe Ball (the mother of Lucille Ball), who attended every taping of I Love Lucy (1951). The laughter was recorded by Glen Glenn Sound and would be used as the laugh track in many sitcoms for years.
This episode contains two references to Northeast Ohio: Ward mentions Shaker Heights, a suburb of Cleveland, to June when talking about an old girlfriend. Also, the representative from the accordion company mentions a customer from Cleveland.