Massachusetts General Laws Part I. Administration of the Government (Ch. 1-182) Ch. 94, § 17A

No person himself or by his servant or agent shall, for the purposes of sale or exchange, add any fat or oil other than milk fat to, or blend or compound the same with, any milk, cream or skimmed milk, whether or not condensed, evaporated, concentrated, powdered, dried or desiccated, so that the resulting product is in imitation or semblance of milk, cream or skimmed milk whether or not condensed, evaporated, concentrated, powdered, dried or desiccated, nor shall any person himself or by his servant or agent sell, exchange or deliver, or have in possession with intent to sell, exchange or deliver, or expose or offer for sale or exchange, any milk, cream or skimmed milk in any of the aforesaid forms to which has been so added or with which has been so blended or compounded any fat or oil other than milk fat.  No person himself or by his servant or agent shall sell, exchange or deliver, or have in his possession with intent to sell, exchange or deliver, or expose, or offer for sale or exchange, as pure milk, any milk, cream, or skimmed milk in any of the aforesaid forms to which has been added or with which has been blended or compounded any milk fat.  Whoever violates any provision of this section shall be punished by the penalties prescribed by section twenty-four.