"There were rumors at the time of 'dwarf sex parties' being held in the famous Culver Hotel (subsequently owned by John Wayne) where the actors who played the munchkins all lived during filming.

And there were also reports of wild evenings with rooms ransacked and drunken little people swinging from the rafters."

More at the site:
(not sure if I can link it.. there's enough here to search on it):

dailymail . co . uk / news / article-4201046 / Judy-Garland-molested-Wizards-Oz-munchkins . html

Poor Judy.