Autograph Letter Signed, to Mrs. Chambers, arranging a tea party with the Lawsons and Professor Anstead, extending an invitation, and hoping for a “full account of your Swiss adventures”. 4 pp. 7 x 4 inches, fine. 18 Lower Seymour Street, 26 September, no year given. William Spence (c.1783 – 1860), economist and entomologist. He became interested in entomology when he was 22 and immediately began a correspondence with leading entomologist William Kirby. Together they wrote Introduction to Entomology, published in four volumes between 1815 and 1826, the first popular book on entomology in English. Spence also published some 20 notes on entomology. In 1822, he also published Tracts on Political Economy Viz. 1. Britain Independent of Commerce; 2. Agriculture the Source of Wealth; 3. The Objections Against the Corn Bill Refuted; 4. Speech on the East India Trade. With Prefatory Remarks on the Causes and Cure of Our Present Distresses as Originating from Neglect of Principles Laid Down in These Works (London: Hurst, Rees, Orme and Brown, 1822).