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

Correspondence regarding a request for birds and mammals from Africa for the Zoological Society of London

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

Letter from, Bruce S Ingram to Philip Lutley Sclater requesting an illustration in the Illustrated London News of the mammal newly discovered by Sir Harry Johnston

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

Letters from Sir Harry Hamilton Johnston to Philip Lutley Sclater regarding posts open at the Foreign Office for the consular department, the Kilimanjaro Expedition, papers on birds, mammals and insects from Kilimanjaro, medals to be awarded for services to zoology, animals and specimens sent by Mr Johnston to the Zoological Society of London, drawings of animals, a visit to the gardens of the Zoological Society of London by the Katikiro of Uganda and his party, and his election as a member of the Council and attendance at meetings, and the Zoological Club

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

Catalogue of Nepalese Birds presented to As[iatic] Society and duly named and Classified by the Donor, Mr Hodgson (with Blyth's remarks added), 9 April 1842; Catalogue of Nepalese Birds presented to As[iatic] Society and duly named and Classified by the Donor, Mr Hodgson, not dated; List of Mammal skins and bones brought home in 1844 & presented to Br[itish] Mus[eum]; List of Drawings (new series) received from the Zoological Society, March 1845; List of New & Undescribed Species of Birds from Nepal presented to the Honourable East India Company by B.H. Hodgson, Esq., 23 Sept 1853; List of Mr Hodgson's Mammal drawings numbered by sheets according to the Count of February 1870; List of Mr Hodgson's collection of drawings of Mammalia numbered by sheets according to the Count of July 1874 (2 copies); List of drawings of Mammals given and sent to Zool Soc, 13 July 1874; Copy of letter to PL Sclater about Hodgson's annotated drawings which he will send to ZSL, 13 July 1874; Various receipts

Memorandum regarding periods of fertility and the fertility rates of the various species of mammals on Exhibition at the Gardens of the Zoological Society of London since 1826

Papers relating to the opening of the Charles Clore Pavilion for Mammals, including the Secretary's speech, timetables, invitations, memos, and correspondence with Buckingham Palace and Kensington Palace