Massachusetts General Laws Part I. Administration of the Government (Ch. 1-182) Ch. 156B, § 31

Every corporation shall, once in every five years, publish once each week for three successive weeks in a newspaper of general circulation in Boston, and also in a newspaper of general circulation in the county where the corporation has its principal office, a list of all dividends which have remained unclaimed for two years or more and the names and last known addresses of the persons to whose credit such dividends stand.