This was Shelley Fabares' first appearance as Francine. She would be a recurring character on the show and later would become a regular character.
Interestingly, Shelley Fabares' first husband, record producer Lou Adler, was the manager of the Mamas and the Papas, which was lead by Mackenzie Phillips father John Phillips. Also, Phillips and Adler were responsible for promoting the Monterey Pop Festival.