Mass. Gen. Laws ch. 94 § 10H
No person shall manufacture, bake or compound for the purposes of sale, or sell, offer for sale or have in possession with intent to sell in this commonwealth for human consumption, any white bread or rolls unless such bread or rolls conform to the definition of "enriched bread" as set forth in section one; and no person shall sell or offer for sale or deliver to any person other than to a wholesale distributor of such flour any flour for human consumption unless such flour conforms to the definition of "enriched flour" as set forth in section one; provided, that a manufacturer or wholesale distributor of flour may, upon the written request of a commercial manufacturer or baker of bread or rolls, and in accordance with the regulations of the department of public health, sell and deliver to such manufacturer or baker unenriched flour. Such baker or manufacture electing to purchase unenriched flour for use in the manufacture of white bread or rolls shall furnish to the department of public health information pertaining to the source of supply of such flour, the quantities purchased, and the method of compliance with the enrichment requirements of this chapter as to white bread and rolls of his manufacture, in accordance with the regulations of said department.
Mass. Gen. Laws ch. 94, § 10H