Mont. Code Ann. § 16-3-405

Every railroad, motor carrier, and airline transporting table wine manufactured out of this state from points outside this state and delivering to points within this state shall, if requested by the department, on or before the fifteenth day of each month, make an exact return to the department of revenue of the amount of such table wine so transported and delivered by such railroad, motor carrier, or airline during the previous month, and shall state in such return the name and address of the consignor and consignee, the date of delivery, and the amount delivered. A carrier shall retain for 30 months all pertinent and relevant records necessary for the preparation of this report and any other information the department may require.