In the beginning, when the nuns are in the chapel, all four of them are supposedly reading the same text. But Sister Hilda and Frances' books are opened close to the middle, while Sisters Monica Joan and Julienne's are opened near the beginning.
When Millicent Higgins and Nurse Crane are describing their Christmas fantasy dinners, Miss Higgins reveals that she would wash hers down with a Harvey Wallbanger, which she first had at a Charleston contest in 1926. However, it is believed that the ingredients for the drink were first concocted in 1952 and the name wasn't applied until 1969,four years after this episode takes place.