Mattapan Square, Mattapan, Mass. Postcards Mattapan Square, Mattapan, Mass. No. 564 Postcard. Caption on front: Mattapan Square, Mattapan, Mass. Postally unused. On verso: A.M.S. 8147. Printed in Germany. Facebook Twitter Print Friendly Skills Dorchester, Mattapan Square, Trolley Posted on November 25, 2022 ← Minot School, Neponset, Mass. Consumptives Home, Quincy St. →