BOULTON (Matthew Piers Watt). Specification of Matthew Piers Watt Boulton. Propelling Vessels. Letters Patent to Matthew Piers Watt Boulton of Tew Park, Oxfordshire, Esquire, for the Invention of "Improvements in Propulsion, and in Rotary Apparatus for Giving Motion or Energy to Fluids and Receiving Motion or Energy from Them."1867

London: Printed by George E. Eyre and William Spottiswoode, Folio (290 x 195 mm), 7, [1]pp., orig. blue printed wrappers, patent stamp on upper wrapper.