Letters from S S Tenlon to David William Mitchell regarding the New Pheasantry, a building and enclosure for the aurochs, and for an addition to the Giraffe House at the Zoological Society of London
Letters from Gerald Chetwynd Talbot, Private Secretary to the Governor General of India, to David William Mitchell regarding occurrences in the upper provinces of India which prevent the sending of Himalayan birds to England and the agent sent to Calcutta by the Zoological Society of London, a wild goat sent for presentation to Prince Albert, and a collection of hill birds for Prince Albert
List of prices from Stock and Son for crown, sheet and patent plate glass
Correspondence between Edward Smith-Stanley, Earl of Derby, and David William Mitchell regarding a list of desirables from the sale catalogue of the aviary and menageries at Knowsley Hall
Letter from the Societe Royal d'Histoire Naturelle de Gand to David William Mitchell regarding the payment for delivery of animals
Letters from William Smith to David William Mitchell regarding the price of Reports and Proceedings of the Zoological Society of London
Letters from Alexander Shaw to David William Mitchell regarding tigers from Bombay sent to the Zoological Society of London
Letter from Sautet and Robinet to David William Mitchell regarding the destruction of insects in the Gardens of the Zoological Society of London
Secretary's reports on the Zoological Society of London
Letter from Regent's Canal Company to David William Mitchell regarding the fence on the south side of the Gardens of the Zoological Society of London