Dorchester High School Postcards Dorchester High School No. 536 Postcard. Caption on front: Dorchester High School, Dorchester, Mass. Postmarked Mar 18, 1911. With one cent stamp. On verso: The Rotograph Co., N.Y. City. Printed in Germany 56477 Facebook Twitter Print Friendly Skills Codman Square, Dorchester, High School Posted on November 25, 2022 ← St. Joseph’s Manor Mattapan Square →