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Posted By: davidcycleback

MastroNet auctioned an uncut sheet of them, I think referring to them as notebook covers proofs(their description will be found in the old aucton catalog). The sheet was soonafter cut down into singles for resale.

I beleive all the known singles came from the one sheet, so there are only a few of each player. I think Christy Mathewson, Ty Cobb and Walter Johson are included.