High School Postcards High School No. 1006 Postcard. Caption on front: High School Bldg, Dorchester, Mass. 717. Postmarked Dorchester Station Jun 19, 1917. With one-cent stamp. Facebook Twitter Print Friendly Skills Codman Square, Dorchester, High School Posted on November 27, 2022 ← First Parish Church and Lyceum Hall Blue Hill Avenue →