Letters from Wilhelm Carl Hartwig Peters of the Museum Regium Zoologicum, to Philip Lutley Sclater regarding Huxley's paper, a sketch of the plan of the monkey house, plates, specimens in his possession, and his memoirs

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'

Papers regarding the Michael Sobell Pavilions for Apes and Monkeys at ZSL London Zoo, including Council minutes, memorandums, briefs, plans and correspondence

Correspondence between G W Pulfer and Geoffrey Marr Vevers regarding the shipment of a pet monkey to the United Kingdom from South East Asia

Correspondence between E F Pullinger and Geoffrey Marr Vevers regarding the import of monkeys

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 mammals such as an offer of a Lioness for mating, the measurements of Camels, Toto the Lesser Kudu, Mink breeders, Monkeys from East Africa, Quaggas, the gestation period of a Giraffe, Horned Hares, and domesticating the Paca and Capybara

Report by G M Vevers on his visit to Carl Hagenbeck's Animal Park at Stellingen, with a drawing of Monkey Hill at Stellingen

Report by the Zoological Society of London on the Michael Sobell Pavilions for Apes and Monkeys

Correspondence between Rotterdam Zoo and Geoffrey Marr Vevers regarding the building of aviaries in Rotterdam Zoological Park, the offer of Mangabey Monkeys from the Zoological Society of London, and a subscription to Zoo Life