Say what you want but he was the one that compiled all the info, published the books, and turned it into a business. There was a nitch market that got filled.
IIRC, he bought the info from another person/group and figured out a way to monetize it.
Broadcast sheets, yes there have been reproductions and stacks of originals out there to create whatever you want. Even methods of how to "age" them... :)
