Autograph Letter Signed ‘Isaiah Deck le jeune’, to Monsieur Boutigny [Pierre Hippolyte Boutigny, professor of chemistry] in Paris, about the invention and design of a lamp. In French. 10 x 8 inches, integral address leaf with Deck’s visiting card affixed, tipped on to album page. Victoria Terrace, Leamington, 1 December 1845. Isaiah Deck, son of Isaiah Deck (1792-1853). In 1825 the elder Deck established himself in Cambridge on Trumpington Street as a pharmaceutical chemist and mineral dealer, and around 1830 moved to new quarters at 9 King’s Parade. In 1843 he also opened a chemists’ shop at 6 Victoria Terrace in Leamington Spa. It was run by his son, also Isaiah, and closed in 1848. Isaiah Deck the younger went to Egypt in search of emeralds in the 1850’s, and there conceived an incredible plan to satisfy America’s desperate shortage of rags for paper-making by shipping tons of Egyptian mummies across the Atlantic for making paper pulp from their linen wrappings (he published a paper on it in 1855).