Massachusetts Go Association
The Massachusetts Go Association is the main go club for the Eastern Massachusetts area. We meet on Tuesday and Friday evenings from about 6pm until the last few people ditch. We're a key club, so our members have unlimited 24 hour access and can check out books from our extensive library. We're in Somerville rather than Boston, but we're easily accessible on the T (subway) and the commuter rail. Our website has most of the information you'd need to make the wise decision to join us.
Verified as probably still active in 2021. The website is up and has a reference to an event of 2019.