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 Philip Manson-Bahr and Geoffrey Marr Vevers regarding research into zoology in relation to tropical medicine, a meeting of the Association of Bird Watchers and Wardens at the Zoological Society of London, and paintings of Birds of Paradise

Correspondence between F Shaw Mayer and Geoffrey Marr Vevers regarding collecting animals in New Guinea for the Zoological Society of London, such as Birds of Paradise, Parrots, Tree Kangaroos and Echidnas

Correspondence regarding W J C Frost being commissioned by the Council of the Zoological Society of London to collect Birds of Paradise and Crowned Pigeons for London Zoo