Plans of Three Islands Pond
Copies of letters regarding the drainage system of the gardens of the Zoological Society into Regent's Canal, with accompanying map
Letters from Alexander Agassiz to Philip Lutley Sclater about the collections of British Museum and Jardin du Plantes, Paris
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.'
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
Letter from Philip Lutley Sclater requesting the present address of George William Allan, who was proposed as a Fellow in March 1856
Letters from Morton Allport to Philip Lutley Sclater about the introduction of salmon to the waters of Tasmania