1Petition from Abijah Babcock, 24 June 1793 (Jefferson Papers)
Philadelphia, 24 June 1793 . Requests a patent for a machine he has invented “for propelling Boats or Vessels and Carriages, and working Mills, which he conceives will be found of great use in Navigation, and saving of labour in the branches to which it is applied.” Tr ( DP : Scientific Library, Propulsion of Vessels, 1791–1810); 1 p.; with Enclosure No. 1 subjoined; at head of text: “To...