Mass. Gen. Laws ch. 200B, § 2
(a) A notice to a lender or claimant under this chapter shall contain:
(c) If notice to a lender or claimant is not given in accordance with subsection (b), or if, after a diligent search of its records, a museum does not know or cannot determine the lender's or claimant's identity or address, notice may be given by publication, in which case notice shall be published:
(2) if the museum has in its records the lender's or claimant's address, at least once per week for 3 successive weeks in a newspaper of general circulation in the county or municipality in which the lender or claimant is located.
For purposes of this chapter, the date of notice given under this subsection shall be the date of the last published notice under either clause (1) or (2), whichever occurs later.