Dangerous Minds, the website where I found this entry, calls this "one of the single most demented things a celebrity has ever left behind for the world to discover several decades after their death."
Even people who would normally never care about something Judy Garland-related marvel at the incredible pathos and dark insanity of these tapes, which come off like Garland performing in a one-woman show written by Samuel Beckett. YES, they are that good.
Recorded between 1963 and 1967, when the great performer was down on her luck financially, for the purpose of helping Garland write her autobiography, the tapes were a part of the Judy Garland archive at Columbia University. It wasn’t until Gerald Clarke made use of the recordings in his excellent—and ironically titled—book Get Happy: The Life of Judy Garland in 2001, that they escaped to the outside world.