Mattapan Square, Mattapan, Mass. Postcards Mattapan Square, Mattapan, Mass. No. 1023 Postcard. Caption on front: Mattapan Square, Mattapan, Mass. Postally unused. On verso: Published by C.O. Tucker, Boston. Facebook Twitter Print Friendly Skills Dorchester, Mattapan Square Posted on November 29, 2022 ← Bridge over Neponset Car Barn, Neponset Bridge →