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 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 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 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