Letters from W A Conklin of the Department of Public Parks in New York, to Philip Lutley Sclater regarding the birth of an elephant at a circus in Philadelphia
Letters from Arthur E Brown of the Zoological Society of Philadelphia, to Philip Lutley Sclater regarding the birth of an African elephant
Letters from William Henry Huxley to Philip Lutley Sclater regarding alligators of North America and other matters
Letters from Spencer Fullerton Baird of Washington to Philip Lutley Sclater regarding ornithology
Letters from Charles Kingsley to Philip Lutley Sclater regarding naturalists in Denver, Colorado, specimens for the Zoological Society of London, and the paper of the ex-governor of Trinidad
Letter from Samuel Pierpont Langley of the Smithsonian Institution to Philip Lutley Sclater regarding the establishment of a Zoological Park in the City of Washington
Letters from Sir Charles Lyell to Philip Lutley Sclater regarding the donations of a text regarding Charles Darwin to the Library of the Zoological Society of London, a list of books to be purchased for the Library, the foundation of a zoological society in Boston, Massachusetts, and a request from keepers to read books on natural history and the animals in their care