Tex. Rev. Civ. Stat. art. 8603

No person, firm, association of persons, corporation or carrier selling or transporting any gasoline, benzine, naphtha or other similar product of petroleum, shall fail to truly label in large letters showing the name of such person, firm, association of persons, corporation or carrier on any tank car, barrel, cask, tank wagon, receptacle or reservoir in which any petroleum product shall be shipped or stored within this State, or from which sales or delivery of the same are to be made.