At least one.
Mid 19th c.
Consists of one residential building identified as the property of the M. Heminway and Sons Silk Mfg. Co. (#3493) on an 1874 map of the area. The residence is a two-story wood-frame vernacular duplex located east of the mill at 269 Porter Street. Additional multi-family and duplex-style houses are located east of the mill along Porter Street and Echo Lake Road, however, it is unclear whether these buildings were directly associated with the M. Heminway and Sons Silk Mfg. Co.