While Nan Martin portrays a woman who is thought to be Dorothy's mother, she is actually five years younger than Bea Arthur.
Nan Martin was also featured as Mrs. Claxton in episode, "It's a Miserable Life".
With Dorothy facing the possibility that Sophia is not her biological mother, it is interesting that Rose never brings up the fact that she was adopted by her parents as revealed in "You Gotta Have Hope". However, this show is known for inconsistencies in backstories.
Vito Scotti also appeared in season 3 as the Italian architect helping to build the guest bedroom in the girls garage.