If such proprietary records relate to lands lying in more towns than one, they shall be deposited in the office of the town clerk of the town first incorporated or in the office of the secretary of state.
N.H. Rev. Stat. Ann. § 303:22
Lands in 2 Towns
Source
Official source: New Hampshire General Court. Reproduced from public-domain New Hampshire statutes; confirm against the official source for the current text. Not legal advice.