This is Frank Wilcox's second of three appearances in the series, each time playing a different character. His first appearance occurs in the first season as a judge in The State Versus Beaver (1958); his third and final appearance comes in the fifth season as a Mr. Farmer in Eddie Quits School (1962).
This is Veronica Cartwright's first of three appearances as Violet Rutherford. Her fourth and final appearance occurs in the sixth and final season, where she plays Peggy MacIntosh in Don Juan Beaver (1963). The character of Violet Rutherford appears one other time prior to Veronica Cartwright taking over the role when Wendy Winkelman plays her in The Black Eye (1957) from the first season.
The part of Violet Rutherford was played by Wendy Winkelman in The Black Eye (1957); here she is played by Veronica Cartwright.
This is the first of three appearances by Violet Rutherford, daughter of Fred and Gwen Rutherford, who is played by Veronica Cartwright. It is never explained why the Rutherford's ten year old daughter has never been seen nor has she ever been even mentioned before. Prior to this Clarence "Lumpy" Rutherford was the Rutherford's only child.