File of sale catalogues for the natural history collections of the late Sir Vauncey Harpur Crewe, bart To be sold at Steven's Auction Rooms, Covent Garden, London Comprising catalogues for British butterflies and moths (priced), 20 Oct 1925, British birds and mammals (priced), 10 Nov 1925, British butterflies and moths, 24 Nov 1925, British birds' eggs including egg of the Great Auk (two copies, one priced, one unpriced), 15 Dec 1925, British birds, mammals and birds' eggs (priced), 23 Feb 1926, and rare exotic lepidoptera, books, etc priced), 13 Apr 1926 1925-1926