| 1. |  | American Optical Company clock tower and edifices on the right | American Optical Company; American Optical Corporation; Southbridge (Mass.)--History; Optical industry--Massachusetts--Southbridge; Historic buildings--New England | With the Common in the foreground, a close view of the buildings from the Clock Tower to the right side is shown. This comprises part of the Main Plant, as it was known. Brick is the main building material... |
