Christopher Leffingwell to John Chester20
Norwich [Connecticut] 30th Augt 1791
Since forwarding Statement of Manufactories have discoverd an Omission of the Manufactoring of Carding Machines and Jennys for Carding & Spinning on the large Scale. Those in Mr Lathrops works21 were wholly made here by an Inhabitant of this Town who is a Great Mechanical Genius. Machines for Cutting doubling & Crooking Card wire for making Common Cotton & Wool Cards are also made in this Town. Those at Philadelphia & Several in Boston were made by a Nathan Cobb of this place.
I am your most Obed sert
20. ALS, Hamilton Papers, Library of Congress.
21. This is a reference to the cotton manufactory established at Norwich in 1790 by Dr. Joshua Lathrop and Cushing Eells.