Letters from Thomas Mayne Reid to Philip Lutley Sclater regarding his sale of Jacob Sheep and books or papers about British birds
Correspondence between R G Readman and Geoffrey Marr Vevers regarding employment at the Zoological Society of London and the transportation of birds to England
Correspondence with Geoffrey Marr Vevers regarding general queries such as specimens of Hedgehogs, Birds of Prey, fencing for Bison, samples of bark, the flea Hectopsylla psittaci, insuring animals, big game hunters, a Llama cart, the well in the Zoological Gardens, cattle guards, the caring of monkeys as pets, a Tree Kangaroo named Minnie, the temperature in the Monkey House, bird life of the Cocos Islands, the bodies of Goldfish, measurements of the eyes of animals, photographs of the Penguin Pool and a broadcast on Children's Hour
Correspondence with Geoffrey Marr Vevers regarding queries about birds, such as Java Sparrows, steps that should be taken by the Government of Malta to procure Swans, a request for a pair of Garganey, black Swans in a park in Kirkcaldy, and the average life of a Cormorant
Correspondence between Sydney Porter and Geoffrey Marr Vevers regarding donations of birds to the Zoological Society of London
Letters from Sir Robert Ker Porter in Caracas thanking Bennett for the his letter and Proceedings of the Society's committees, the good health of a tapir, a bear belonging to a resident in Caracas, a bird called Curapoas (or Forvies), the shipment of a Capuchin Monkey, 'a very curious little animals of the weasel kind, and six land tortoises by the Brig 'Pedraza', a consignment he received save for the weasel which was washed overboard, and descriptions of the consignment in the 'Pedraza'
Correspondence between the People's Dispensary for Sick Animals of the Poor and Geoffrey Marr Vevers regarding records of animals and birds on war service for the Imperial War Museum and Forces Mascots
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
Letters from William Hillier Onslow to Philip Lutley Sclater regarding whether the Zoological Society of London would like to have a pair of Keas, membership of the Zoological Society, and the preservation of native birds of New Zealand. Also a report on Native New Zealand Birds with a memorandum by Lord Onslow.
Correspondence with the New York Zoological Society regarding the diet of Humming Birds from Ecuador