Letters from Alexander Shaw to David William Mitchell regarding tigers from Bombay sent to the Zoological Society of London
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
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
Articles of Agreement and correspondence between John Warwick with the Zoological Society of London and the Earl of Derby regarding a voyage to Egypt and Nubia to procure live animals and birds for the Zoological Society of Lonon
Report by William Yarrell and Mitchell about purchase of greyhounds from Abbas Pasha
Letters from William Harrison Ainsworth to David William Mitchell regarding the cancellation of his subscription to the Zoological Society of London
Letters from R I Bouchier to David William Mitchell regarding five ostriches for the Zoological Society of London, a lion from Sir Vincent Casolain and a collection of living reptiles
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