Posted By:
William HeitmanMonster page 7, at the bottom "The only break in the patterns I have ever found is the Demmitt, St. Louis American, card, which has only been found with a Polar Bear back. I suspect that a Demmitt, St. Louis, with a "350" type of back will be found someday, but I am not aware of any. Demmitt played only 10 games for St. louis in 1910, and I suppose it is possible that most, if not all but one, of the manufacturers failed to place him in their "series" for this reason."
The checklist in The Monster did not purport to be a checklist of every known card. It was a theory and a checklist of the possibilities using that theory. Of the group of toughies that Kleinow, Boston, has been thrown into ever since I began collecting T206 50 years ago, I've always considered the Kleinow, Boston, to be one of the easier to find. We didn't do "population" reports, but I think it fair to say that relative knowledge of scarcity didn't start with either grading services or ebay.