N.H. Rev. Stat. § 120:4
In the taking of lands by the United States for any public purpose, by condemnation proceedings, it shall be sufficient notice to all parties interested, if an attested copy of the petition for such taking and summons or order of notice thereon, made by the court or selectmen petitioned, shall be given in hand to, or left at the last and usual place of abode of, all known interested parties residing in this state, and by a like service on all others, or by sending by registered mail a like copy to the last known post-office address of such known interested party, and by publication in such paper or papers and for such times as the court or selectmen petitioned may order.
RSA 120:4
1913, 196:1. PL 1 :10. RL 1:6. 2014, 204:5, eff. July 11, 2014.