Louisiana Revised Statutes Tit. 26, § 368. Highway transporter required to have invoice

A. Any person using the public highways of Louisiana in hauling, transporting, and delivering into or within the state any alcoholic beverage shall have in his possession, during the entire time he is so engaged in hauling or transporting the alcoholic beverages, an invoice or bill of sale showing the true name and address of the seller and of the buyer and the number of gallons or fraction thereof carried.

B. The person so engaged in hauling or transporting the alcoholic beverages shall, at the request of any person authorized by law to inquire into or investigate such matters, produce and offer for inspection the invoice or bill of sale. If he fails to produce the invoice or bill of sale, or if, when produced, the document fails to disclose the required information, there is prima facie evidence of a violation of this Chapter and the person is subject to prosecution therefor.