Letter from Sir John Macpherson, Bart. to Whitshead Keene, Esq. M.P May 31, 1806 - Macpherson, John (Printed for Beckett and Porter, 1810)
Goldsmiths'-Kress no. 20028. - OCLC, 16669789. - Reproduction of original from Goldsmiths' Library, University of London