Corrected entry: While Joan & Betty are in the kitchen, we see a phone hanging on the wall. The girls are called out of the kitchen & Spencer says he just got a call and has to be in NY the next morning for a meeting. At no point during the time the girls are in the kitchen do we hear the phone ring and there was no such thing as cell phones at that time.
raywest
13th Feb 2013
Correction: There were no cell phones at that time, but it was certainly possible to have more than one phone line installed in a house. Spencer may have had a second phone line put in on the pretense that it was for his "work" but to cover up his extra curricular activities, and to keep his wife from listening in on an extension. It is also possible to turn the ringer off on phones, even back then. They may just have preferred not to have the kitchen extension turned on.
raywest ★