Facsimiles of the signatures of the clerk of the senate and the clerk of the house of representatives on endorsements of bills, reports of committees and other legislative documents shall have the same validity and effect as their written signatures.
Mass. Gen. Laws ch. 3, § 12A
Facsimile signatures of clerks
Official source: Massachusetts Legislature. Reproduced from public-domain Massachusetts statutes; confirm against the official source for the current text. Not legal advice.