Hi Franny , yeah I've heard all that before. Probably about the time of the "elvis is alive" craze in the 1990s was about the first. At that time I did a freedom of Information act request for the FBI files and bought some other things, and it was in some of that disapointing mess. I say disapointing because about half of the FBI file stuff was all blacked out, but it still cost $50.
There were a couple of things in his life like this that would maybe interesting stories if there was anyway to get the honest truth at this time.