Correspondence between Hans Heck and Julian Sorell Huxley regarding the construction of a new Elephant House at the Zoological Society of London

Letter to Professor H Heller of the Department of Pharmacology at the University of Bristol regarding meetings to discuss comparative endocrinology

Letters from Higginson and Vigors to Philip Lutley Sclater regarding the proposed Regent's Canal Railway

Correspondence between the High Commissioner of South Africa and George Soper Cansdale regarding a request for specimens of the big horned Afrikander humped cattle to establish a herd at Whipsnade

Letters from Thomas Hillier to Philip Lutley Sclater regarding complaints made about the nuisance arising from the drainage of the gardens of the Zoological Society of London into Regent's Canal

Information about the history of the Hospital, Quarantine and Pathology Section at London Zoo, a copy of the notes sent to Glaxo Labs in 1957 by the Scientific Director

Papers regarding the land and bungalow at Holly Frindle

Correspondence and papers regarding the House of Pleasant Bread, numbers 1 and 2

Papers regarding Humphrey Talbot Avenue, named after Humphrey John Talbot, Trustee of Ashridge Estate, who helped secure the land for Whipsnade Zoo

Papers regarding the proposal to establish a Teachers Centre to be integrated with the ZSL Education Centre