Louisiana Revised Statutes Tit. 51, § 761. Manufacturers; stamping of certain information on boot or shoe required

No person shall use in manufacturing any boot or shoe, a counter, heel, in-sole, out-sole, middle-sole or slip-sole, made in whole or in part of leather-board, straw-board, leatheroid, fibre-board, horn-fibre, pate or any other substitute for leather, without clearly, legibly, and in the English language, stamping with a metal die and in plain view, upon the outside of the out-sole of the boot or shoe, where and by whom such boot or shoe was made and what substitute for leather, if any, has been used; and in the same way designating each part where the substitute has been used, whether in the counter, heel, in-sole, middle-sole or slip-sole.