Visible crew/equipment: When Mrs. Bennett shows up the second time and tells June that she'd like to give Beaver a reward, the curved chalk actor's mark is visible on the floor near the staircase, and it's where June will stand after Poncho and his "mother" leave the house. (00:21:05)
Continuity mistake: June makes Ward go to school to talk to Mrs. Rayburn. She says Mrs. Rayburn was her teacher and still makes her nervous. In Beaver gets 'Spelled episode, June doesn't recognize the name of Mrs. Rayburn on the flowers. Ward says that the only Mrs. Rayburn he can think of is the principal at school.