| Description | Memorandum entitled "Remarks on Ketly Engine." (2 pcs.)
Memorandum entitled "Perpendicular Steam pipes for Chelsea Engine." (Includes drawings of the pipes.)
Memorandum entitled "Common Castings charged by Mr. Wilkinson at the Price of bored ones."
Memorandum by James Watt, docketed "Calculation for Middleton tires [i.e. Middleton Tyas ] Engine."
Memorandum by John Southern, docketed "Demensions of Boiler, Albion Mill, Chelsey, & Shadwell." 22 May 1786. (Dated at Harpers Hill.) |