The list of class assignments for the new term at Wally's school is shown briefly in close-up. "Joe Connely" is assigned to Mr. Foster's class and "Robert Mosher" to Mrs. Thompson's. Joe Connelly (spelled with two 'L's) and Bob Mosher are the creators of the series and writers of this episode. Other interesting names, given the actors and characters in the series, are "Theodore Dow" and "Barb Billing".
This is the first of six appearances that Cheryl Holdridge makes as Julie Foster. She made two earlier appearances: once in season two and once in season three as Gloria Cusick.
The scene on the park bench between Wally and Julie playfully pointing out supposed smudges on each other's noses is reminiscent of Wally's Pug Nose (1959) from season two where Cheryl Holdridge, this time playing Gloria Cusick, also points out something she observes about Wally's nose.