Hallet & Davis Piano Factory Postcards Hallet & Davis Piano Factory No. 1308 Postcard. Caption on front: Hallet & Davis Piano Factory, Dorchester. Roper-photo. Postally unused. Facebook Twitter Print Friendly Skills Dorchester, Hallet & Davis Piano Factory Posted on November 30, 2022 ← Daly Industrial School Pierces Sq., near Milton, Dorchester, Mass. →