Letter from William Luadale of the Geological Society to W J Broderip regarding soil specimens and copies of the Proceedings of the Geological Society
Letter from Thomas Bradley to John Barlow regarding the decision of the Royal Gallery of Practical Science to part with the specimen of the gymnotus electricus
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 Henry Francis Ainslie to Philip Lutley Sclater about plans for the erection by the Zoological Society of a new 'cats house or house for lions, tigers, and other large Felidae.'
A letter from a Fellow of the Zoological Society to Philip Lutley Sclater regarding a lecture given by Professor Huxley
Letter from Edwin Lester Arnold to Philip Lutley Sclater requesting an order for two persons for the Zoological Gardens
Letter from Thomas Ashton to Philip Lutley Sclater asking to withdraw his name as a candidate at the next election of Fellows at the Zoological Society of London