Boston: Jack's Drum Shop. I used to practically live there in the late 70's/early 80's. Good people back then- hopefully, still are now.... http://www.jacksdrumshop.com/
If you go there, and there's still a sub shop called "Little Stevie's" next door, you also must stop in and have a steak&cheese grinder for me. Haven't had a Little Stevie's grinder since 1985, and I _miss them badly_. The most wonderfully disgusting, disgustingly wonderful foodstuff in existence! When I was living in the student ghetto up Hemenway Street, I could only afford one of them a week- but I didn't miss many weeks...