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

Correspondence between Antwerp Zoo and Geoffrey Marr Vevers regarding an exchange of animals between the Zoological Society of London and Antwerp Zoo, and a paper called 'Notes about our attempt to present snakes separated from the public by an invisible obstacle'

Letter from Antwerp Zoo, with papers on Consideration Upon the Necessity of Coordinating All Observations Taken on Okapis Living in Captivity, and Ways in Exhibiting Birds in Cages

Letter from the Curator of The Auckland Zoological Park to George Soper Cansdale regarding an offer of a trio of Keas to the Zoological Society of London

Correspondence between Auckland Zoo and George Soper Cansdale regarding a shipment of Keas to the Zoological Society of London. Also, a paper by the City of Auckland on Conditions of Appointment of Curator, Auckland Zoological Park