Wow, this thread is old....I found a reference to what might be the initial hobby acquisition of this sheet in the Trader Speaks from January 1975. John Stirling came up with it apparently. Stirling put out an early price guide that predated Sport-Americana and isn't that well known but he was deep into things back in the 70's. Some other tidbits too, fun times:
Last edited by toppcat; 05-08-2020 at 03:39 PM.
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