Playing a teacher, this is the fourth and final credited appearance Natalie Masters makes in the series.
For those kids watching The Patty Duke Show (1963), who would have also frequented Saturday morning TV in the mid 60s, the voice of Mike Road, playing the State Department's Mr. Raney, would be familiar. He was also the voice of Race Bannon on the animated TV series Jonny Quest (1964).
This is the first 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.