Alaska poster available for purchase here.
Ohio poster available here.
Philadelphia poster print available at the Draplin store here.
The awesomest of awesome posters, the "Pretty Much Everything" poster is available here.
Probably the most awesome Texas poster I've ever seen, available at the Draplin Merch store here.
Draplin Design Co. is a Portland, Oregon based design studio comprised of Aaron James Draplin who has strong roots with the Midwest. His design style evokes a very raw and textured feel, with a lot of his past work ranging from lettering cafe signs to ad campaigns, to being an art director for a snowboarding magazine. A lot of these I wouldn't mind having embroidered on some of my basic shirts.
Be sure to check out his online store for a bunch of posters, prints, buttons, hats, shirts and all sorts of cool stuff.