The department, through its commissioners or by employees duly authorized, may examine all books, contracts, records, documents, papers and memoranda of any common carrier, and by subpoena duces tecum compel the production thereof, or of duly verified copies of the same or any of them, and compel the attendance of such witnesses as the department may require to give evidence at any such examination.
Mass. Gen. Laws ch. 159, § 34
Examination of books, etc.; subpoena duces tecum
Official source: Massachusetts Legislature. Reproduced from public-domain Massachusetts statutes; confirm against the official source for the current text. Not legal advice.