This has been at the top of my mother's "holy grail" for some time, on her behalf; I'll say I hope you'll look into these two TV movies packaged together with the rare 3-episode television series that followed.

http://www.imdb.com/title/tt0075448/

http://www.imdb.com/title/tt0075449/

http://www.imdb.com/title/tt0128014/

Thank you for your commitment in making her absolute favorite, Father Knows Best, possible; she's eagerly anticipating the two post-series telefilms.