Just to add to the myth is the story that John Henry once told a dealer he was selling fakes of his father, in which the dealer replied something to the fact that "I want my money back then, I bought these Green Diamonds from you".
There is a good book "The last Days of Dead Celebrities" and one the features is Ted Williams. His chef tells how horrible he felt because all day John would make Ted sign autographs, even during his last few weeks of life.
Also, here is a copy of the John Henry "Ted Williams" Forgery:
https://www.robertedwardauctions.com...-signed-sheet/