I have to think we can find some references to the different backs, The Sporting News included, before 1972. But maybe not. I am surprised, also, that Barker and his gang hadn't seen them before this. And I wonder if JR Burdick mentioned them somewhere earlier than this? Interesting to both of us, Todd!
And as I remember it this back wasn't catalogued around 25 yrs ago. I don't have many M101-5/4s any longer. Love the backs..
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