Boston has always been pretty "dry" for top recruits, going back a half century or more. Bruce Brown was indeed a good one.
Off the top of my head, only others that really come to mind would be Bill Curley (Duxbury/BC), Patrick Ewing Georgetown) and Rumeal Robinson (Michigan) - both out of Rindge and Latin HS in Cambridge - and, going way back, Ron Perry (West Roxbury/Holy Cross) and Jimmy Walker (Roxbury/Providence College). Not a great amount of talent for such a huge metro area.