Notes by Julian Huxley on visits to the Zoological Gardens at New York (Bronx Park), Philadelphia, Washington DC, Paris (Vincennes), Hamburg, Berlin, Munich (Hellabrunn) and Frankfort, also the Aquarium at Chicago

Draft notes by Julian Huxley on visits to the Zoological Gardens at New York (Bronx Park), Philadelphia, Washington DC, Paris (Vincennes), Hamburg, Berlin, Munich (Hellabrunn) and Frankfort, also the Aquarium at Chicago

Correspondence between Mrs F Edwards and Julian Sorell Huxley regarding principles of keeping animals in captivity

Plans showing proposed alterations to the Great Ape Breeding Colony

Correspondence between Copenhagen Zoo and Geoffrey Marr Vevers regarding a visit to London and Whipsnade Zoos, with arrangements regarding the transfer of animals

Correspondence between G Kenneth Whitehead and George Soper Cansdale regarding the stock of Muntjac at London and Whipsnade Zoos

Letter from Antwerp Zoo, with papers on Consideration Upon the Necessity of Coordinating All Observations Taken on Okapis Living in Captivity, and Ways in Exhibiting Birds in Cages

Correspondence between W H Hale and George Soper Cansdale regarding the export of animals from Kenya and lists of approved Zoos

Reports by the Curator of Mammals for the Breeding Policy Committee, later the Committee of the Wellcome Institute of Comparative Physiology, of the Zoological Society of London

Papers regarding the symposia 'Zoos and Conservation' at the Zoological Society of London, including correspondence, speeches and reports