I remember that the Overture was longer than what's on the recording, specifically the "Why, Mama, Why?" section. There are also a couple of musical numbers missing from the recording: "Cadava," which was a burlesque doctor's sketch, and two production numbers, "From the Ankles Down" and "A Century of Progress". One of those two production numbers had very elaborate costumes and headresses for the girls, I seem to recall. The melody for "Cadava" was that little ragtime figure that is heard whenever Romaine is onstage. (It's heard before the "I hate to mention it" routine in the opening number, and throughout "Timing").
Begin at the beginning and go on till you come to the end: then stop.