Letter from John Humphrys regarding the identification of shells he had though of as Indian origin, and a discussion about his collection

Letters from Thomas de Grey to Philip Lutley Sclater regarding his expedition down the Rocky Mountains into New Mexico, skeletons of mammals for the Cambridge museum, and a paper on West Indian Microlepidoptera for the Proceedings of the Zoological Society of London

Letters from John Edward Grey of the British Museum to Philip Lutley Sclater regarding the key to the gardens of the Zoological Society of London, a paper on tortoises, specimens of a monkey and lemur to be exhibited at a meeting, the death of a gorilla, meetings of the Council, and reports of the Proceedings of the Zoological Society of London

Letters from John Gould regarding a Zebra that was exhibiting signs of tetanus, the request of a salary of £50 for the new arrangement by the Museum Committee, an expedition to collect specimens for the Zoological Society of London and several gifts to the Society

List of specimens sent to British Museum. Presumably compiled by JE Gray and GR Gray before their published version in 1846. Lists reveal 803 mammals, 4425 birds, 663 bird skins, 21 human skulls with origins

Letters from Friedrich Finsch, Curator of the Museum of Natural History in Bremen to Philip Lutley Sclater

Letters from Alphonse Milne-Edwards, Director of the Menagerie au Museum d'histoire naturelle, to Philip Lutley Sclater

Letter from Felix Anton Dohrn to Philip Lutley Sclater regarding an enquiry by Gegenbaur and publications of the Zoological Society of London

Letter from Hugh Cuming to Edward Turner Bennett, apologising for being unable to meet him with a portion of his shells

Correspondence with the Coryndon Museum regarding the sale of an Ostrich to the Zoological Society of London, and the offer of a Cricetomys and a Hinged Tortoise