Joe's Books and Things - Manassas, Virginia. He eventually moved to Burke, Virginia (near Fairfax).
Marie's Books in Fredericksburg, Virginia.
And really getting old-school, Bill's Books and Things in Manassas in the late 70s. As a kid, saw a Superman #12 hanging by a clothes pin on a string draped across the room.
Anybody from Virginia know what happen to Joe?
I believe one of the Fantagraphics guys started his career selling those metal spinning comic racks to drugs stores around Northern Virginia in the early 70s. At least that is what I've heard.