Doris McCarthy, the deli patron in blue, out races Midge back to the apartment with enough spare time to gather her two dogs for a walk.
Baz tells Midge to bring latkes next time, yet she brings brisket again.
When Midge is wiping the cold cream off of her face in the morning you see her with no eye makeup on since she washed it off the night before. Next she is shown washing her face and the eye makeup is mysteriously on, then they show her applying something to her face with a brush and has no eye makeup on, then she has eye makeup on again and is applying her fake eyelashes.
The rabbi is shown wearing a tallit (prayer shawl) during the wedding reception scene. Not only would the rabbi NOT be wearing it while seated at the table, it is even questionable whether he would have worn it during the wedding ceremony itself.
A key plot point to the episode which is set in April 1958 is Joel Maisel ripping off Bob Newhart's famous "Abe Lincoln vs. Madison Avenue" routine, and Newhart is heard performing the routine on "The Ed Sullivan Show". However, Bob Newhart did not release his debut album - which includes that routine - until May 1960, and his first "Sullivan" appearance was in November 1960.
When Midge sees Bob Newhart doing The comedy act, she is watching The Ed Sullivan Show. In the story line, it has been established that it is a Thursday night. The Ed Sullivan Show aired on Sunday night for 24 years.
Midge makes reference to Don Rickles. While Rickles did co-star in the movie "Run Silent, Run Deep" in 1958, it wasn't a comedy. He did have a successful career in comedy in Las Vegas, he was not widely known and didn't make his debut on Johnny Carson until 1965. She mentions him several times throughout the series and it's inaccurate that he would be widely known.
Joel Maisel uses the phrase "take a meeting." Back then, it was "have a meeting." "Take a meeting" came into use decades later.
One scene shows a GM new look bus passing by. These buses were first introduced in 1959.