N.Y. GBS Law § 396-E

§ 396-e. Marking articles made of linen. Any person, firm, corporation\nor association who makes or sells or offers to sell or dispose of, or\nhas in his or its possession, with intent to sell or dispose of, any\ncollars or cuffs marked, stamped or branded with the words, "linen,"\n"pure linen" or "all linen" or incased or inclosed in any box, package,\ncover or wrapper or other thing in, by or with which the said article is\npacked, inclosed or otherwise prepared for sale or disposition, having\nthereupon any engraving or printed label, stamp, imprint, mark, or\ntrade-mark, indicating or denoting by such marking, stamping, branding,\nengraving or printing, that such article is "linen," "pure linen," or\n"all linen," unless the material of which the said collars or cuffs are\nmanufactured contains at least one fold or ply which has a flax thread\nin both its warp and filling, is guilty of a misdemeanor.\n