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This 87+ year old Item is rated Very Fine +++. Light aging throughout. No creases. No natural defects. Light surface rub - right side. No tears. No water damage. There is some extremely light bleed through from opposite side of ad (mostly visible in lower left margin).
Keywords specific to this image: Hyde Park Massachusetts, Berkeley California, Wisconsin, Camden New Jersey, Galt Ontario, Framingham, Engineering, Combustion Efficiency, Coal Vintage Advertising