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
Letters from Alphonse Milne-Edwards, Director of the Menagerie au Museum d'histoire naturelle, to Philip Lutley Sclater
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
Correspondence between Sir Arthur Landsborough Thomson and L Harrison Matthews regarding Council Meetings, a proposed educational exhibit, a museum of the Zoological Society of London, the Scientific Fellowship, and the Department of Zoology in Cambridge
Letters from Sir George Clerk to David William Mitchell regarding the Chancellor of the Exchequer and the purchase of a museum collection of the Zoological Society of London
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 the British Museum (Natural History) and George Soper Cansdale regarding specimens donated by the Zoological Society of London to the British Museum (Natural History)