Oberkampf, Émile (1787-1837, 1st baron, textile manufacturer at Jouy en Josas, son & heir of Christophe Oberkampf & politician). Two signed folded autograph letters to Messrs Hierle et Fils and André Amic, madder merchants from Avignon, dated: Jouy [-en-Josas], 7 December 1815 & 22 April 1816. 2 pages in 8vo; one folding; folding marks, remains of paper seals. Neatly penned replies to offers of industrial madder colourant powder by two Avignon suppliers on 30th November 1815 and 13th April 1816; both were declined, as sufficient quantities were still available at Émile Oberkampf sold his textile printing firm in 1822, serving as mayor of Jouy and then as a liber al politician in the Restoration parlement; he was ennobled 12 February 1820 and is buried in Pere Lachaise cemetery. In fresh condition. 1 cf. Alice Peeters, Les plantes tinctorales dans l économie du Vau cluse au xix siècle (1975), p48. Jouy. Émile Oberkampf, who had recently succeeded his famous father Christophe, on 4th Oct