Mass. Gen. Laws ch. 104A, § 2
(b) A consignor who delivers a work of fine art hereunder shall, upon delivery of the work of fine art, furnish to the consignee a separate written statement of delivery of the work of fine art, which shall include at a minimum the following information:—
(c) The consignee shall maintain a copy of the consignor's written statement as an acknowledged acceptance of delivery of the art work. If the work of fine art is sold, the consignee shall record the date it sold, for what amount it sold, and name and contact information of who purchased the work of fine art. If the consignor is the creator of the work of fine art or the artist's heirs or legatees, the consignee shall disclose the name and contact information of the purchaser of the work of fine art to the consignor with payment of the funds owed to the consignor.
The consignee shall make all records pertaining to that consignee, including records of accounts, available for the consignor to review during consignee's normal business hours, within a reasonable time after consignor's request, and shall provide copies of the account records to the consignor when requested. The consignee shall keep copies of all books and records for at least 4 years after completion of the consignment.