Valuable printed books : comprising natural history, atlases, travel, early printed and continental books : including Redouté and Thory Les roses 1817-1824, the recently re-discovered "lost" copy of the "red lined" map of North America (1783), Fridolin Schatzbehalter, 1491, Diderot and d'Alembert Encyclopédie, 1751-1780, property of the Comte de Colbert (catalogue for an auction conducted by Sotheby's, London, 22 June 1995)