Copies of letters regarding the drainage system of the gardens of the Zoological Society into Regent's Canal, with accompanying map
Letter from John Alger to Philip Lutley Sclater ahead of his visit to Australia
Letters from Sir Lawrence Alma Tadema regarding an unmounted lion's skin and a letter in support of an artist being allowed to study in the Zoological Gardens
Letter from Leopold Charles Maurice Stennett to Philip Lutley Sclater offering to get anything he wished during his trip to South Africa, and thanking him for a recent zoo ticket
Letter from Adolphe Edouard Arppe to Philip Lutley Sclater regarding the Societe de Sciences au Finlande
Letter from Arthur F Astley to Philip Lutley Sclater regarding the subject of reptile feeding at the Zoo
Letter from William Baird to Philip Lutley Sclater regarding a paper containing the description of the new aplysia
Letters from Sir Samuel White Baker to Philip Lutley Sclater regarding notes and sketches of Hippotragus Bakeri
Letters from Phineas Taylor Barnum to Philip Lutley Sclater regarding the purchase and transfer of Alice the elephant. Also a letter regarding the purchase of specimens for Barnum's Zoological Museum