Below are some places I've visited and loved: Locally in Boston and Cambridge, and beyond.
Bangor, ME 1 & 2
Border Cafe: Harvard Square, Cambridge, MA
Brattleboro, VT & Keene, NH
City Girl Cafe: Inman Square, Cambridge, MA
Gather Here: Inman Square, Cambridge, MA
NorthBowl: Northern Liberties, Philadelphia, PA
Rockport, MA
