Anyone know what these Negro League cards are?
 

They are 2 1/2" H x 2 1/4" W and there is some variation in size. Cards are numbered 113 to 183. The header reads Classic Ballcaps of the Negro Leagues. The back says "The Historic Ball Caps depicted on these cards can be purchased from the Cooperstown Ball Cap Co. Box 1003 Cooperstown, NY 13326" There is no date and no checklist. My internet search has turned up nothing. I posted on the postwar side and was instructed to post here as most Negro League collectors are here. I want to sell them but have no idea as to their value.
Any help would be greatly appreciated.
Thanks,
Tony

Nice looking reprint set of these, is what it looks like (thanks to John)

The Cooperstown cards were a "catalog" they did in the late 1980's. I did some of them back when I was in art school. There was Negro league caps and NL and AL caps, maybe more, I don't remember. To this day Will the owner is a close pal and my oldest client. If you want the best ball cap in the world he's still around with Ideal Cap Co. Brand new company, I don't think it has been officially launched yet but he's already selling caps. Can't stress the quality and detail on those things!