The house occupied by all women was also lived in by the Cleavers of Leave It To Beaver in the early run of that show.
Mary Jackson, who played Irene, would appear once more in the series before moving on to appear as Emily Baldwin in 67 episodes of The Waltons (1971).
Popular and prolific character actor Billy Barty, a little person who appeared in scores of productions, appeared as Billy Longfellow.