ISO burgers on whole wheat or whole grain buns/rolls/bread
To me, the bun is at least as important as the patty, and I avoid those made with white flour. So far, that means I need to make my own cheeseburgers at home. Are there any places north/west of Boston that don't regard the bun as a cheap-as-possible afterthought?
It's not quite in your requested geographic area, but Four Burgers (in Central Square, Cambridge) offers all their burgers on white or wheat buns. I had the wheat once - when they mixed up my order - and it didn't make much of an impression one way or the other, but they do offer it. Pretty good burgers too.
704 Massachusetts Ave, Cambridge, MA 02139