Letter from Major-General Sir John Bennett Hearsey to David William Mitchell regarding pheasants and other rare birds for the Zoological Society of London

Letter from Charles Hengler to David William Mitchell regarding elks, moose and deer in his possession

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 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 from H C James to David William Mitchell regarding his dispatch to Calcutta from Darjeeling, and birds that are destined for the Zoological Society of London

Letter from W B Legros to David William Mitchell regarding a present sent by the Zoological Society to Colonel Bonford and an assurance that Colonel Bonford has in his care the animals gifted by the late Viceroy of Egypt to the Zoological Society of London. Also thanks from Mr Murray for a copy of 'Views'

Letters from William Henry Leigh to David William Mitchell regarding the opening of the Gardens of the Zoological Society on a Sunday