N.H. Rev. Stat. § 195-D:14
Any holder of revenue bonds issued under the provisions of this chapter or of any of the coupons appertaining thereto, and the trustee or trustees under any trust agreement, except to the extent the rights herein given may be restricted by any such resolution authorizing the issuance of, or any such trust agreement securing, such bonds, may, either at law or in equity, by suit, action, mandamus, or other proceedings, protect and enforce any and all rights under the laws of the state or granted under this chapter or under such resolution or trust agreement, and may enforce and compel the performance of all duties required by this chapter or by such resolution or trust agreement to be performed by the corporation or by any officer, employee, or agent thereof, including the fixing, charging, and collecting of the rates, rents, fees and charges authorized in this chapter and required by the provisions of such resolution or trust agreement to be fixed, established, and collected.
RSA 195-D:14
1969, 318:1, eff. Aug. 29, 1969.