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

William Ogilby was a zoologist. He is perhaps best known for this work around the classification order of cheiropoda, linking mammals who had hands. He was ZSL Secretary from 1839-1847.

Letters from Professor Dr J J Hess of Zurich to Patrick Alfred Buxton, regarding the correct forms of the Arabic names of reptiles and mammals, and general notes on transliteration and the use of diacritical points

Correspondence between Alan Francis Brooke and Officers of the Zoological Society of London regarding his resignation from the Presidency of the Zoological Society of London, the Annual General Meeting, and a collection of Australian mammals and birds

List of mammals and birds on deposit as of 11th September 1939

Report on the Aquarium to the War Emergency Committee

Correspondence regarding the construction of a Small Mammal House at ZSL London Zoo

Correspondence between James & Hodder and Geoffrey Marr Vevers regarding the collection of mammals and birds from the Philadelphia Zoo which arrived on the S.S.Sofie Bakke for the Zoological Society of London

Correspondence with Geoffrey Marr Vevers regarding queries about mammals such as an offer of a Lioness for mating, the measurements of Camels, Toto the Lesser Kudu, Mink breeders, Monkeys from East Africa, Quaggas, the gestation period of a Giraffe, Horned Hares, and domesticating the Paca and Capybara

Correspondence between Copenhagen Zoo and George Soper Cansdale regarding a request for a dozen Ruffs for the Zoological Society of London, the Zoo Directors' Congress, and a consignment of mammals, birds and reptiles from Australia