When Vic is texting Craig in the diner at the beginning of the episode, she writes the full message with caps locks, but when Bing checks Craig's phone later (at about 7'30), the text is written in lower cases.
In one scene, Alvin and the Chipmunks' song "Christmas Don't be Late" is playing on a Victrola. But the song was released in 1958 and most likely not on a 78.