Midnight at the Concord - S2-E5
Continuity mistake: When Benjamin is driving Midge back from the Catskills to New York City, he briefly is driving on the left-hand side of the two-lane country road (which is not a one-way).
The Marvelous Mrs. Maisel (2017)
1 continuity mistake in Midnight at the Concord
Directed by: Amy Sherman-Palladino
Starring: Alex Borstein, Rachel Brosnahan, Michael Zegen, Marin Hinkle
The Disappointment of the Dionne Quintuplets - S1-E4
Factual error: When Midge is moving to her parents' apartment there is a stack of books on the table while her son is watching TV. On top is a Nancy Drew book (the back of the book which is yellow). However publisher didn't introduce the editions with the yellow back covers until the 1960s.
Archie [after Joel's celebratory speech to his staff]: Such a strange mixture of happiness and horror.
Mrs. Moscowitz: Oh, clearly you're not Jewish, dear.
Trivia: Jackie, the Gaslight manager, dies suddenly in Season 4. This was written into the plot due to the real-life death of Brian Tarantina, the actor who portrayed Jackie.