Correspondence between Sir Sidney Frederick Harmer and Joan Procter regarding Procter's remuneration and the Natural History Museum, articles in the press about Procter, a joint paper published by Procter and Dr Malcolm Smith, and Procter leaving the Natural History Museum

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

Correspondence between the Geological Survey & Museum and Geoffrey Marr Vevers regarding wells in the Zoological Society of London Gardens

Letter to Dr F C Fraser of the British Museum (Natural History) regarding his name being put forward as the Society's representative on the National Committee of Biology

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

Letter from Emmett Reid Dunn of the Department of Zoology, Smith College, Massachusetts, regarding her resignation from the British Museum

Letter from Gavin de Beer of the British Museum (Natural History) regarding Desmond Morris and Congo