Letter to Major Albert Pam regarding plans and designs for the Gibbon House and a letter from Sandringham

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

Letters from Decimus Burton to Edward Turner Bennett regarding his brother's giraffe, the location of the parrot cage, drawings of the museum, the risk of fires, and the meeting of the creditors of the Colosseum

Copies of letters regarding the drainage system of the gardens of the Zoological Society into Regent's Canal, with accompanying map

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