4 letters from unknown authors to David William Mitchell regarding membership of the Zoological Society of London, a large blood hound for the Society and the transportation of animals

Letters from Alfred Russel Wallace to Philip Lutley Sclater regarding the purchase of a joint residential estate, extracts read at meetings of the Zoological Society of London, papers for the Proceedings of the Zoological Society of London and Natural Science, his publication on 'Monkeys - their structure, affinities and distribution', a shipment of birds for the Society, improvements to the Gardens of the Zoological Society of London, notes on the Umbrella Bird, his election as a Fellow, papers on marine mammals, opinions on theories by Darwin, Birds of Paradise, and a list of butterflies of Costa Rica

Correspondence between Charles Wharton and Geoffrey Marr Vevers regarding a shipment of Tarsiers to the Zoological Society of London

Correspondence between William Muller & Co. Ltd and Geoffrey Marr Vevers regarding a shipment of Wallabies

Correspondence between Geoff Williams and Geoffrey Marr Vevers regarding the offer to collect snakes in India for the Zoological Society of London

Correspondence between the Yellow Fever Research Institute in Entebbe, Uganda and Geoffrey Marr Vevers regarding a shipment of Monkeys and Red River Hog for the Zoological Society of London

Correspondence between the Zoological Garden in Alipore and the Zoological Society of London regarding a collection for the Society being shipped from Colombo to Calcutta by Mr Osman Hill

Correspondence between the Zoological Society of Scotland and Geoffrey Marr Vevers regarding fibre used for bedding sent by Dr Osman Hill, an offer of Coypu, Dr Hill's collection, stock from Cleland Scott, collecting by Webb and Frost, Import Licences for importing zoological specimens, and a sighting of a humming bird hawk moth