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

Memorandum regarding periods of fertility and the fertility rates of the various species of mammals on Exhibition at the Gardens of the Zoological Society of London since 1826

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

Two lists: birds and quadrupeds, 29 April 1851 to 29 April 1852. Signed by James Hunt, Head Keeper

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 with Geoffrey Marr Vevers regarding Eider Ducks that were bred by Lieutenant Colonel Lumsden

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

Correspondence between N Melides and George Soper Cansdale regarding the exchange of birds for breeding purposes

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

Correspondence with Philadelphia Zoo regarding the transport of snakes and the breeding of Tarsiers