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RobJason, thanks for the nice words. I actually stumbled upon the Supplement accidentally while looking for something unrelated (no, not a new boiler haha). I got it from a Lew Lipset ebay auction, and I previously hadn't even heard of it. "Philadelphia Sporting Boiler". In the writeup Lew says there were 16 Supplements, one from each team at the time. I've never seen any others, so if anyone has one please show it!
I did a quick google and couldn't find any info on the paper/magazine/whatever it was, so if anyone does have info please share.
Rob