Letters from Alexander Agassiz to Philip Lutley Sclater about the collections of British Museum and Jardin du Plantes, Paris
Agreement regarding Nomenclature Zoologicus between the Zoological Society of London, Sheffield Airey Neave and Robert Wylie Lloyd
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.'
Letters from William Harrison Ainsworth to David William Mitchell regarding the cancellation of his subscription to the Zoological Society of London
Letter from Cecil Charles Windsor to Philip Lutley Sclater requesting a press pass for the Gardens as he was illustrating a series of articles for the English Illustrated Magazine
Letter from John Alger to Philip Lutley Sclater ahead of his visit to Australia
Newspaper clipping and report by the Secretary on alien enemy members of the Zoological Society of London
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 Philip Lutley Sclater requesting the present address of George William Allan, who was proposed as a Fellow in March 1856