Lou walks in on Mary and she is seen in the bathtub. In a Never Bathe on Saturday (1965) of The Dick Van Dyke Show (1961), Mary Tyler Moore's character Laura Petrie found herself stuck in a bathtub, although the audience never saw her as they do here. According to Carl Reiner for years people told him they remember seeing Mary in the bathtub on the Dick van Dyke show.
In the 1970s, a telephone operator could tell if a telephone was off the hook and could tell a caller if a phone was off the hook.
Mary Tyler Moore struggled with alcohol and nicotine addiction in real life.