Letters from John Edward Gray regarding John Gould's collection of birds and his subscription to the Zoological Society of London
Letters from Robert Hesketh to David William Mitchell regarding an estimate of work done to animal houses and enclosures at the Zoological Society of London, including the Terrance Dens and the Hippopotamus House
Letters from William Hill and Co. to David William Mitchell regarding the price for an engine and boiler at the Zoological Society of London
Letter from Sir George Cornewall Lewis to David William Mitchell regarding the Treasury not being prepared to purchase the collection of the Museum of the Zoological Society of London
Letters from Sir Richard Owen to David William Mitchell regarding the cost of keeping elephants, his attendance at meetings of the Council of the Zoological Society of London, and his consent to act as Vice President
Letters from Sir Charles Beaumont Phipps to David William Mitchell regarding Prince Albert
Letter from Sautet and Robinet to David William Mitchell regarding the destruction of insects in the Gardens of the Zoological Society of London
Letter from Charles Mull to ask if the Zoological Society of London would be willing to take two specimens of grizzly bear
Letters from Richard Owen regarding remarks on Bennett's edition of White's Natural History of Selborne, proofs of Bennett's paper with appreciation of his opinion on the value of Ousimile on Macr. Porryi, additions and alterations to notes on Hyrax, his omitted note of the salivary bags of the Armadillo from the written report of its dissection, MS of Clavagella, plans of the Monkey House and whether it is heated by hot air or steam, arrangements at the Garden to facilitate repetition and extension of experiments by Mr Hunter in 1725/6/7 to determine the relations subsisting between Wolf, Jackall and Dog, examination of 'your little feli-viverrine quadruped, bones of Touraco and drawings of Terebratala for the Zoological Society of London, East India Goats for sale by Mr Evans Riadone, an introduction to Mr Meade, a senior student at St Bartholomew's and a comparative anatomist and articulator of skeletons who wished to become a candidate for the College of Surgeons curatorship, and a request for Bennett to check a reference to 'Zoologie de la Caquille'
Letter accepting the invitation to Baron Cuvier's dinner