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For description see National Register application: http://pdfhost.focus.nps.gov/docs/NRHP/Text/79002671.pdf. The district includes the former site of the G. Greenman and Co. shipyards and Greenmanville Mfg. Co. (both currently the location of the Mystic Seaport Maritime Museum), which were active during the 19th c. Numerous houses occupied by workers at the mill and shipyards are included within the historic district.