LC Subject Heading: Slate--Maine
Item 78797
Slate Mill operation, Monson, ca. 1920
Contributed by: Monson Historical Society Date: circa 1920 Location: Monson Media: Photographic print
Item 9182
Monson-Maine Slate Company mill, ca. 1920
Contributed by: Monson Historical Society Date: circa 1920 Location: Monson Media: Photographic print