Letters from Sir Edwin Ray Lankester to Philip Lutley Sclater regarding a house for tropical apes in the gardens of the Zoological Society of London, P T Barnum, and papers on okapi

Papers regarding the Michael Sobell Pavilions for Apes and Monkeys at ZSL London Zoo, including Council minutes, memorandums, briefs, plans and correspondence

Plans of a Primate House that was never built. Undated, but possibly 1960s.

Certificate presented to the Architects Department of the Zoological Society of London by The Structural Steel Design Awards Scheme for the Michael Sobell Pavilions for Apes and Monkeys

Report by the Zoological Society of London on the Michael Sobell Pavilions for Apes and Monkeys

Correspondence with D A Pinto-Leite regarding her resignation from the voluntary post of Honorary Supervisor of the Apes' Nursery

Papers regarding the Michael Sobell Enclosure for Apes and Monkeys