Letters from Richard Gibbons to David William Mitchell regarding his subscription to the Zoological Society of London
Letters from John Gould regarding his proposition to exhibit his hummingbirds
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
Letter from David William Mitchell to John Alexander Hope, 6th Earl of Hopetoun, regarding his membership of the Zoological Society of London
Correspondence between John Houston, David William Mitchell and the South Australian Banking Company regarding the sale of birds and a request by Prince Albert to bring a Platypus, Lyre Tailed Pheasant and Black Mackaw to the Zoological Society of London
Letters from Hunter and English to David William Mitchell regarding a steam engine and pumping machinery at the Gardens of the Zoological Society of London
Letter and note from Dr Le Prestre to David William Mitchell
Letters from William Henry Leigh to David William Mitchell regarding the opening of the Gardens of the Zoological Society on a Sunday
Letter and agreements between Thomas Masters and the Zoological Society of London for the rent of the buildings occupied by Masters and for the privilege of selling confectionary on condition that the council would paper and paint the Refreshment Room and erect a suitable stall at the Bears Pit