[ American Scientific Patent No 2622 ] for "Improvement in Water Wheels" May 12, 1842
[ Washington DC ]: US Patent Office 1842. Four pages plus fine colored patent illustration in watercolor and ink. Folio (11 x 15 1/2 inches). Bound by a faded pink silk ribbon. Front and rear leaves on vellum. The first page is an official United States patent document (engraved form)..... More