This episode was Rachel Brosnahan's winning submission for the 2018 Emmy for Outstanding Actress in a Leading Role in a Comedy Series.
The scene where Midge (Rachel Brosnahan) and Joel (Michael Zegen) are conversing on the carousel, the music playing is the Oveture to "Rodger's and Hammerstein's Carousel."
This episode was dedicated to Don Sherman, who is described as "the first of the sit-down comics". Sherman is the father of creator Amy Sherman-Palladino, and was a comedian who died in 2012.
The dress Midge wears for her show at Gaslight is similar to the black dress worn by Audrey Hepburn in "Sabrina"
Vivian, Midge's boy-crazy co-worker, toasts to Charles Boyer. Charles Boyer featured in the film Gaslight (1944). The place Midge performs is The Gaslight.