Correspondence between Malcolm Arthur Smith and Joan Procter regarding the identification of specimens, papers to be read and Smith's travels in Bangkok
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
Letters from Franz Werner to Joan Procter regarding specimens of snakes, an exchange of papers, volumes by Mr Boulenger, a gift of newts, a new frog in London Zoo, and Procter's position at the British Museum
Letters from Gaston-Francois de Witte to Joan Procter regarding her work at the British Museum and papers recommended by Procter
Papers regarding the symposia 'Zoos and Conservation' at the Zoological Society of London, including correspondence, speeches and reports