LC Subject Heading: Canning and preserving--Equipment and supplies--Photographs
Item 12071
Boilers made by the Portland Company, ca. 1920
Contributed by: Maine Historical Society Date: circa 1920 Location: Portland Media: Photographic print
Item 12073
Pressure retort, Portland Company, ca. 1920
Contributed by: Maine Historical Society Date: circa 1920 Location: Portland Media: Photographic print
