Mass. Gen. Laws ch. 233, § 45: Deposition for use in another state

Section 45. A person may be summoned and compelled, in like manner and under the same penalties as are provided for a witness before a court, to give his deposition in a cause pending in a court of any other state or government. Such deposition may be taken before a justice of the peace or a notary public in the commonwealth, or before a commissioner appointed under the authority of the state or government in which the action is pending. If the deposition is taken before such commissioner, the witness may be summoned and compelled to appear before him by process from a justice of the peace or a notary public in the commonwealth.