Massachusetts General Laws Part I. Administration of the Government (Ch. 1-182) Ch. 171, § 31

A credit union may authorize accounts that would allow withdrawals by negotiable or transferable instruments for the purpose of making transfers to third parties.  Such accounts shall be designated as negotiable withdrawal order accounts.  Said accounts shall be subject to regulations of the commissioner.

A credit union which accepts deposits or shares for accounts subject to withdrawal by negotiable or transferable instrument for the purpose of making transfers to third parties shall, if requested by the depositor or shareholder, provide without charge not less than 25 cancelled instruments or legible copies of the fronts and backs thereof per calendar year;  but, if requested by a depositor who is blind the credit union shall make additional accommodations to provide additional cancelled instruments or information thereon as is possible in accordance with the Check Clearing for the 21st Century Act, 12 USC 5001 et seq., and regulations promulgated thereunder.  Section 4-406 of chapter 106 shall be subject to this section.