N.H. Rev. Stat. Ann. § 82:13

Every parlor, sleeping or dining-car corporation or company, or other corporation or company, not a railroad company, owning any cars operated for profit on any railroad in the state, shall state the total number of car-miles, the number of miles traversed by its cars, taken singly, whether within or without the state during the preceding year and the total number of such car-miles during the same period within the state.