Google Earth comes through. I hope someone remembers!
Looney Tunes (which is apparently still around!) was at Mass Ave and Boylston in Boston—I used to live right around the corner from it. I bought my first-ever bootleg there, a Pink Floyd set called Loose Connection: The Best Live in Concert 1968-1969, which is a totally bogus title, because at least a few tracks came from the Zabriskie Point studio sessions (several are from a Dutch radio broadcast of The Man/The Journey). The sound quality was awful.
I also bought cassettes of the self-titled Genesis album and a Spencer Davis Group best-of there. This was all during the summer between my junior and senior years of high school, when I went to the Berklee summer program. Looney Tunes was across the street, Tower, Newbury, Mystery Train, Spins, and Nuggets were all a short walk away. I was in heaven. When I moved back for college, I already knew where I’d be spending my evenings and my money.