I'm lucky, as if I'm not playing pinball at home, I'm 15 mins from the Silver Ball Museum in Asbury Park, NJ. If your happen to be anywhere near the Jersey Shore, make sure you make time to stop there. Check out their website if you haven't before:
http://silverballmuseum.com/They have a list of machines in operation at their facility located on the boardwalk in Asbury Park..across from the Stone Pony...Springsteen country.
"Feets fail me not"