The Longjohn Flap autobiography, "Never Have Your Dog Stuffed: and Other Things I've Learned", Alan Alda says that for this episode, he borrowed the structure from "La Ronde". "In my version, the object that's passed from couple to couple is a pair of long johns during a cold spell in the Korean winter." The Longjohn Flap "The Longjohn Flap" was episode #19 of the first season of the TV series "M*A*S*H". It originally aired on February 18, 1973 and was the first episode of "M*A*S*H" to be written by series star Alan Alda. In the middle of a cold snap, Hawkeye receives a
Things Which Have Never Yet Been Done (Skyler Wexler) undergoes bone marrow extraction to donate to Cosima in an attempt to cure Cosima's illness. Alison and her husband Donnie (Kristian Bruun) attempt to bury Dr. Aldous Leekie's body, while Helena attempts to escape from the ranch of the Proletheans, a religious extremist group. "Things Which Have Never Yet Been Done" marked the first on-screen appearance of Kathryn Alexandre, who also works on the show as Maslany's "clone double" when filming scenes where multiple clones interact. The episode was filmed at various locations in Toronto and the title was taken from Francis Bacon's work "Novum Organum". It was