Walter Baker & Co., Ltd., Pierce Mill Postcards Walter Baker & Co., Ltd., Pierce Mill No. 312 Postcard. Caption on front: Walter Baker & Co., Ltd., Pierce Mill, Front, Dorchester Lower Mills, Mass. Postally unused. On verso: Pub. by Thomson & Thomson, Boston, Mass. No. 1559. Printed in Germany. Facebook Twitter Print Friendly Skills Baker Chocolate, Dorchester, Lower Mills, Pierce Mill, Walter Baker & Co. Posted on November 18, 2022 ← Joe Dudek, 1964- High School for Girls →