Scottish letters patent granted to Thomas Farmer for obtaining sulphur, sulphurous acid and other products from pyrites
Letters patent granted to Thomas Farmer for 'Improvements in treating Pyrites to obtain Sulphur, Sulphurous Acid and other products'
Sketch books of drawings of fragments recovered from the shipwrecks of the Royal George and the Edgar
Manuscript entitled: "Catalogue of the Apparatus of Philosophical Instruments, in the Collection of Her Late Majesty Queen Charlotte, at the Observatory at Richmond in Surrey"