Correspondence between Antwerp Zoo and Geoffrey Marr Vevers regarding an exchange of animals between the Zoological Society of London and Antwerp Zoo, and a paper called 'Notes about our attempt to present snakes separated from the public by an invisible obstacle'

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

Early papers regarding the Aquarium at London Zoo, including correspondence, price lists, reports on visits to Hamburg, Berlin, Brussels and Dresden

Black and white and colour photographs, mainly of various zoos, including Frankfurt, Berlin, Jersey, Antwerp, Stuttgart, Bristol, Paignton, Thoiry, Ueno (Tokyo) and Singapore, as well as images of herpetological specimens in captivity

Letters from A de Borre of the Musee Royal d'Histoire Naturelle Brussels, to Philip Lutley Sclater

Colour negatives of Mrs Ray Romer with a baby gorilla at Frankfurt Zoo, and views of Antwerp and Stuttgart Zoo, along with some personal images, dated June to July 1975; Colour negatives of Mrs Ray Romer with a baby gorilla and a baby orangutan at Frankfurt Zoo, along with various views of that zoo and of Hong Kong Zoological and Botanical Gardens, plus some personal images, dated July 1975

Correspondence between the Zoo-Centre in Brussels and Geoffrey Marr Vevers regarding the transfer of birds and Wallabies

Correspondence between W Hopkinson and George Soper Cansdale regarding an enquiry from the Zoological Gardens Board of Western Australia in connection with the offer they had received from Poly-Zoo Ltd of Antwerp, for the supply of a pair of Polar Bears

Report by Peter Chalmers Mitchell on a visit to Brussels, Berlin and Dresden in December 1913 to examine new Aquaria