This is the third appearance of Dino and this time he's purple.
Fred and Wilma dated in high school (which contradicts the episode Bachelor Daze, unless they worked at the Honeyrock Hotel before they graduated).
Wilma went to Boulder High School.
Wilma buys Fred a watch for his birthday. This is Fred's second birthday episode in the first season.
This episode was recorded on 9-2-60.
The character of Perry Gunite is a spoof of TV detective Peter Gunn (1958-1961). In fact Perry Gunite has his own jazzy underscore reminiscent of the famous Peter Gunn theme composed by Henry Mancini.