Letter from Abraham Dee Bartlett to David William Mitchell regarding the weight of the flesh, bones, skin and organs of an elephant
Copy of a letter from Earl Charles John Canning to Colonel Phipps regarding birds in Calcutta and an expedition by an agent of 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
Letter from the Societe Royal d'Histoire Naturelle de Gand to David William Mitchell regarding the payment for delivery of animals
List of prices from Stock and Son for crown, sheet and patent plate glass
Letter from Allan, Deffell & Co. to David William Mitchell requesting assistance for Mr James Thompson and a collection of birds and some quadrapeds
Letter from Charles Hengler to David William Mitchell regarding elks, moose and deer in his possession
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
Letter to David William Mitchell from James Pennethorne regarding requirements for canal bank maintenance
Letter from George Arbuthnot to David William Mitchell acknowledging the receipt of his letter to the Chancellor of the Exchequer