Unitarian Church, Dorchester Lower Mills Postcards Unitarian Church, Dorchester Lower Mills No. 288 Postcard. Caption on front: Unitarian Church, Dorchester Lower Mills, Mass. Postally unused. On verso: No. H 12790? The Robbins Bros Co., Boston, Mass. and Germany. Facebook Twitter Print Friendly Skills Dorchester, Lower Mills, Richmond Street, Unitarian Church Posted on November 15, 2022 ← Oliver Wendell Holmes School Oliver Wendell Holmes School →