| 1. |  | American Optical Company in 1921 campus map: dates indicate the year of erection or remodeling the several buildings into their present construction | American Optical Company--Southbridge (Mass.)--Maps; American Optical Company; American Optical Corporation; Southbridge (Mass.)--Maps | A map of the American Optical Company campus, dated Nov. 23, 1921. The (as yet incomplete) section of the Main Plant on Mechanic Street, Southbridge, Massachusetts is shown, the terraced section was completed... |
