The Albertina Rasch Dancers ballet sequence is missing from the extant print shown on Turner Classic Movies; most likely, it was removed at one time and used in another short subject, possibly one of the early The Three Stooges entries.
The film excerpts four sequences from MGM's abandoned The March of Time (1930): the Krazy Kollege for Fiddlers with Polly Moran, Karl Dane, Cliff Edwards, and Gus Shy in a comedy sketch, and an Albertina Rasch Dancers ballet number.
The chef is played by Karl Dane, and not Nat Pendleton. Dane has another turn in the film, in evening dress.
Benny tells Dr. Smith that he earns $15/week; in 2024, that would amount to about $280.