Massachusetts Supreme Judicial Court February 1, 1968 (Vallentine v. Jacobson)

The plaintiffs (Group A) own land (Lot A) just west of Boston park land (Lot C) at the southwesterly corner of the intersection of Commonwealth Avenue with Chestnut Hill Avenue. On Chestnut Hill Avenue the defendants (Group B) own Lot B, bounded on the south by Lot A and on the east by Lot C.