at Sneaker guide, i was going to post this a while ago but theres not that much to it.
Concepts (Tannery) in harvard square has a couple of decent ones, some old J's. Le Foot Sportif (Dunster Road, behind the Garage) has good old school Saucony's and Pumas.
DOWNTOWN CROSSING: Crystals has a lot of nice old school adidas and some pumas, and theyre one of the top Timberland sellers on the East Coast. Manhattans also has some nice kicks too, decent selection. Hip Zeppi might have some, but they are ghetto as sin, so i never go in there, they got busted for having fakes. All on winter street. On washington street theres Foot Paths, which has some hot timbs and a couple kicks, they get the newer nikes and Jordans.
You might also want to check out the Puma Shop on Newbury, accross from newbury comics. Then also on newbury is the Niketown.
Washington Street is my favorite, downtown, because they have a lot of nice spots for Gear (the 2 hats stores down near the arcade, Lids, etc).
I know theres some Mom and Pops around the Bean, in like JP and Dorchester. Not sure exactly where, though.
"We need to pay more attention to our surroundings/ Busy wildin, all for the wrong cause/ Put that same strength into somethin that'll pay off/ Don't forget your soul's involved/ That same energy you put out, comes right back it revolves..." -Prodigy