Letters regarding the appointment of Henry Gascoyne Maurice as President of the Zoological Society of London, and the Trust's application for new accommodation in the Society's premises
Correspondence between the Societe Royal d'Histoire Naturelle de Gand and Philip Lutley Sclater regarding the exchange of animals including a Bubal
Correspondence between the Royal Entomological Society of London and the Zoological Society of London regarding the election of the President of the Royal Entomological Society as an ex officio honorary member of the Zoological Society
Letter from the Marine Biological Association of the United Kingdom to the Zoological Society of London regarding the transportation of six tubes, some flat fish (lemon soles and plaice), a few rays, dogfish and some spider crabs. Also a price list of marine specimens
Letters from Thomas Henry Huxley to Philip Lutley Sclater asking about available birds for dissection, meetings of the Council of the Zoological Society of London, proofs and woodcuts for a paper, specimens of birds and the Marine Biological Association
Letters from Christian Gottfried Ehrenberg, Secretary of Carolinische Akademie de Naturforsche, acknowledging receipt of the Proceedings of the Zoological Society for 1830-31
Letters from Arthur E Brown of the Zoological Society of Philadelphia, to Philip Lutley Sclater regarding the birth of an African elephant
Correspondence between the British Museum (Natural History) and Sheffield Airey Neave regarding delegates to the Conference on Nature Preservation in Post-War Reconstruction, and a meeting of the Council
Letters from A de Borre of the Musee Royal d'Histoire Naturelle Brussels, to Philip Lutley Sclater
Letter from Lewis Adolphus Bernays to Philip Lutley Sclater regarding the Acclimatisation Society of Queensland