May 30 4 Wassenaar Zoo: Ornithological & Zoological Library, Bonhams 020 7393 3828
May 30 4 Modern 1sts, Illustrated & Limited Editions, Chiswick Auctions 020 8992 4442
May 30* 4 55-lot Book Section, Wotton Auction Rooms - Wotton-under-Edge 01453 844733