Letters to Cadell and Davies, 1797-1835
Letters to John Nourse, 1749-1777, undated
Letters to James and George Lackington, 1806-1814, undated
Letters to and from Lady Eleanor Fenn and Sir John Fenn, 1791-1792, undated
Letters to John Boydell, and Hurst, Robinson & Co., 1801, 1821, undated