Posted By:
jay behrensSadly, most local shop owner don't have a clue about card issued prior to ww2. Hell, most of them can't even help you if you have anything that isn't a mainstream Topps, Bowman, Donruss, Fleer, Upper Deck issue. Bring ina regional issue to them and they will be dumb founded most of the time.
If you are lucky enough to live in a town that actually has a shop that carries a good inventory of vintage, then yes, they are invaluable source.
Jay