Correspondence with W E Butlin regarding the International Zoo Year Book
Letters from Arthur Gardiner Butler to Philip Lutley Sclater regarding attendance at committee meetings and illustrations for publications
Letters from Decimus Burton to Edward Turner Bennett regarding his brother's giraffe, the location of the parrot cage, drawings of the museum, the risk of fires, and the meeting of the creditors of the Colosseum
Correspondence between J E Burns and Sheffield Airey Neave regarding Burns and his proposal to live on his ten ton cutter to fish and observe bird life on the West Coast of Scotland
Correspondence between Burnet, Tait and Lorne and Julian Sorell Huxley regarding proposed new elephant and rhinoceros houses and paddocks at the Zoological Society of London, and the proposed Tusker Elephant House at Whipsnade Zoo. Also minutes of the Whipsnade Committee 9th December 1936, and an extract from a memo on accommodation for catering staff at Whipsnade (known then as the House of Pleasant Bread)
Letters from Sir Francis Cowley Burnand to Philip Lutley Sclater regarding admission to the Zoological Society of London, also one admission ticket
Letters from Bennet Burleigh to Philip Lutley Sclater regarding the donation of two turtles
Letters from Bennet Burleigh to Peter Chalmers Mitchell regarding two young ostriches and a squirrel from Somaliland to be gifted to the Zoological Society of London
Letters from John Samuel Budgett to Philip Lutley Sclater regarding his research on okapis and expeditions to study polypterus
Correspondence with Budapest Zoological and Botanical Garden requesting aid