LC Subject Heading: Copper industry--Maine--Blue Hill
Item 29333
Douglass Copper Mine, Blue Hill, ca. 1880
Contributed by: Blue Hill Historical Society Date: circa 1880 Location: Blue Hill Media: Photographic print
Item 29329
Copper and Gold Exchange, Blue Hill, ca. 1900
Contributed by: Blue Hill Historical Society Date: circa 1900 Location: Blue Hill Media: Photographic print
