That the Leach and the Stone are rarities does not surprise me in that all other players represented by two cards have one that has already been recognized as rare or less common.
I would also question the accuracy of the Clarke (Pittsburgh) numbers. That card never seems to come up and I can recall seeing one or two mislabelled over the years, so the true number may be lower.
Also, I find it curious that many of the red background cards fall on the low pop side of things (Duffy, O'Connor, Leach, Richie, Keeler, Tenney and Bliss, for example).
Great work!
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