Atlases, travel and natural history : including the properties of the most honourable the Marquess of Downshire, the Rt. Hon the Lord de Saumarez, Lieutenant Colonel Sir John Miller, GCVO, DSO, MC, Donald Angus also the valuable collection of atlases formed by the firm of John Bartholomew of Edinburgh and a fine set of Audubon’s Birds of America (1827-1838), the property of a nobleman (catalogue of an auction sale conducted by Sotheby's, London, 21-22 June 1990)