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.'
Letters from James Anderson regarding a proposed Zoological Garden in Edinburgh, with a reply from Philip Lutley Sclater
Letter from A Andrews to Nicholas Aylward Vigors regarding recompense for the loss of his cane at the gardens of the Zoological Society of London
Letter from a Fellow to Nicholas Aylward Vigors regarding the conduct of a group of children from a charity school during a visit to the gardens of the Zoological Society of London
Letters from Thomas George Baring to Philip Lutley Sclater regarding the Zoological Gardens at Calcutta
Letters from Thomas Bell regarding his apologies that he will be unable to meet Edward Turner Bennett at the Gardens of the Zoological Society of London, proposed changes to the Gardens of the Society, a recommendation for William Cranley to work in the museum and an invitation to dinner
Letter from Charles James Blomfield to Nicholas Aylward Vigors regarding a letter to be presented to the council or managing committee of the Zoological Society of London
Letters from Gambier Bolton to Philip Lutley Sclater regarding alterations and additions to the gardens of the Zoological Society of London due to the decline in visitors