Letters from William Henry Hudson to Philip Lutley Sclater regarding cuckoos, shipments of birds to the Smithsonian, Woodpeckers in Argentina, Blackbirds and other birds
Letters from Thomas Henry Huxley to Philip Lutley Sclater asking about available birds for dissection, meetings of the Council of the Zoological Society of London, proofs and woodcuts for a paper, specimens of birds and the Marine Biological Association
Letter sent by G P Clifford to Philip Lutley Sclater regarding birds sent by the Otago Acclimatisation Society to the Zoological Society of London
Letters from Clements Robert Markham, Secretary of the Royal Geographical Society, to Philip Lutley Sclater regarding permission for his cousin to take photographs in the gardens of the Zoological Society of London, a request to review Eastern Persia for the Geographical Magazine, Sclater's membership of the Geographical Society, a representation to the government with a view to the exploration of the North Pole region, the Spitsbergen bird, and an order for his wife and himself to see their dogs at the gardens
Letters from Sir Richard Owen to Philip Lutley Sclater on subjects such as plates of the Dodo, papers on bird bones, notes on the dissection of a penguin, cetacean drawings, chambered shells, drawings of birds from Madras, photographs of harpagornis and his papers on diornis
Letter from William Henry Hudson to Peter Chalmers Mitchell enclosing a copy of Birds of La Plata for the Library of the Zoological Society of London
Correspondence regarding W J C Frost being commissioned by the Council of the Zoological Society of London to collect Birds of Paradise and Crowned Pigeons for London Zoo
Letter regarding an expedition to collect birds for the Zoological Society of London
Correspondence between British Museum (Natural History) and Geoffrey Marr Vevers regarding a report of a Black-Headed Gull to the Bird-Ringing Committee at the British Museum of Natural History, articles on Okapi by Reginald Innes Pocock, an account of the baby Dendrohyrax by Cecil Stanley Webb , Antarctic Seals, skins and skulls of small carnivores, the fox which the Zoological Society of London received from Tel Aviv Gardens, an exhibition of Tree Hyraxes, exhibits for Major Cottam, donations of specimens to the British Museum (Natural History), mongoose skins, Tangier Smith's location in Sze Chuan to locate the original Pandas, the release of Kodiak Bears at Whipsnade Zoo, publications by Doubleday on the Giant Panda, rings for a Golden Eagle from the Bird-Ringing Committee, the species of Monkey from Northern Nigeria, a Leopard from the Himalayas, measurements of the Kodiak Bears called Kam and Schatka at Whipsnade, and a donation of Hedgehogs to the USA
Correspondence between Leslie Martin Flewin and Geoffrey Marr Vevers regarding the sale and surplus of animals from German zoological collections, and animals and birds on loan from Hagenbeck's Tierpark in Hamburg