I just received a scan of a terrific letter from Larry Ritter to autograph legend Jeff Morey, essentially crediting Morey for helping him locate some players. I always had a theory that Ritter's book should be credited for getting the names of pre-war players into the minds of autograph seekers in the 1960s and 1970s. It is amazing to see that the autograph seekers themselves had a hand in Ritter's work.
Here's one of my favorite signed T206 cards from the Morey collection (Crawford -- who was also in Ritter's book), as well as a scan of the letter from Ritter to Morey.