Papers regarding the re-building programme at Regent's Park and the general development of the Gardens

Letter from Julian Sorell Huxley to Jasper Ridley regarding the plans for the new Elephant House and an approach to Lord Howard de Walden regarding a donation towards the construction

Correspondence between Julian Sorell Huxley and Tecton Group regarding the construction of the new Elephant House

Letters from Abraham Dee Bartlett to Philip Lutley Sclater regarding the doors to the new elephant house, animal food consumption, the female rhinoceros, the mounted specimen of a young gorilla, authorisation to sell Alice the elephant to Mr Barnum, and the theft of an owl

Letters from Gambier Bolton to Philip Lutley Sclater regarding alterations and additions to the gardens of the Zoological Society of London due to the decline in visitors

Proposal for a new Aquarium and coral reef at London Zoo

Minutes of the Layout Committee