There's one fairly close to me in Tewksbury Mass.
At first glance it's not much of a card store, they have lots of stuff like pennants, posters, all kinds of souvenir stuff. And a decent selection of modern cards. They also do some vintage, mostly postwar Redsox. They sometimes have prewar. They have at least one buyer for T206s whenever I'm there they show me the ones they have for him. Priced a bit high, but not crazy.
They also sell pokemon and that sort of stuff, as well as a few kid favorite gag items. I got my nephew a pair of "crazy eye" glasses
(Kid size glasses with bloodshot eyeballs mounted on slinkys if you've never sen them)
They also do a lot of internet selling, and were ahead of many places doing that. When Curtis Martin went to the Jets they packed up the whole inventory of his cards and sold them onlline to a dealer in NY in under 24 hrs. They got rid of what would become dead inventory and the NY guy had a nice selection well ahead of the other shops around him. A win for everyone.
Steve B