Letters from Spencer Fullerton Baird of Washington to Philip Lutley Sclater regarding ornithology

Letters from William Henry Huxley to Philip Lutley Sclater regarding alligators of North America and other matters

Correspondence with James M Kittleman regarding a vacancy for an Executive Director at the Chicago Zoological Park

Letter regarding an extract from a letter received from Robert Bean, Director of the Chicago Zoological Park, regarding several gorillas that were taken to the United States

Correspondence between Geoffrey Marr Vevers and Philadelphia Zoological Garden regarding shipments of animals between their zoos, including Kodiak Bears, Coyotes, Raccoons, Aoudads, Thars, Opposums, Turkey Vultures, Screech Owls, Robins, Purple Grackles, Wood Thrushes, Olive-backed Thrush, Bicknell's Thrush, reptiles and amphibians

Correspondence between Rowley Bristow and Geoffrey Marr Vevers regarding material showing the comparative anatomy of the forearm and Ronald Furlong of St Thomas' Hospital who was working on the surgery of the hand and tendons in America

Correspondence between Portland Zoological Park and Geoffrey Marr Vevers, and newspaper cuttings, regarding an exchange of reptiles, wallabies and hedgehogs

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