LC Subject Heading: Knox-Martin tractors--Photographs
Item 12013
Knox-Martin 3-wheeled tractor, 1914
Contributed by: Maine Historical Society Date: 1914 Location: Portland Media: Photographic print
Item 12019
Knox-Martin 3-wheeled tractor, 1914
Contributed by: Maine Historical Society Date: 1914 Location: Portland Media: Photographic print