List of American zoos by A Lindsay; Report of a visit to New York and Chicago (1936); 'Notes on visits to some foreign zoos, 1934 and 1935' by Huxley (covering New York Bronx, Philadelphia, Washington, Paris Vincennes, Hamburg, Berlin, Munich Hellabrun, & Frankfurt); extract from report on the British Colonial Exhibit, World's Fair, New York, 1939; Report on visit to Austria and Germany by D Seth Smith (c1937); Report on a visit to the Zoological Gardens at Antwerp, Rotterdam and Amsterdam (1935); Report on a visit to France (1938); letter from Chalmers Mitchell to the Directors of Zoological Gardens in Germany, introducing Huxley, 1935; handwritten notes on zoos; notebook; 'La Reproduction des Animaux Sauvages en Captivite' by A Urbain; Report on visit to Brookfield Zoo (1940); guide to Internationalen Jagdaustellung, Berlin, 1937.

Correspondence with Leonard Harrison Matthews regarding meetings of the Zoological Society of London, animal accommodation, Scientific Fellows, the acquisition of animals, making Prince Philip a member of the Zoological Club, papers put forward to the Publications Committee, Giant Pandas in Peking, a possible presentation of animals to Delhi Zoo, Research Fellowships and Research Studentships, the Congress on Animal Reproduction, the sex ratio of mammalian births, and newsletters

Report and recommendations of the committee et up to consider applications for the Society's Fellowships and Studentships in the physiology of reproduction

Papers of the Reproduction Department of the Institute of Zoology, including memorandums, correspondence and research programmes