Letters from George John Romanes to Philip Lutley Sclater regarding research into whether mutilations are ever inherited and Weismann's theory of heredity

Letter from Robert Blake White to Philip Lutley Sclater regarding his research into tapirs

Research notebook of A H Garrod, Prosector/Anatomist at London Zoo (1871-1879). Contains notes on the post-mortems of animals. Most are not dated.

Letters from William Bateson of the John Innes Horticultural Institution regarding frogs and further research

Correspondence with W P Heuschele, Veterinarian at San Diego Zoological Garden regarding the minutes of a meeting of the Research Council of the Biological Research Institute

Applications from candidates, including Solly Zuckerman, for the Anatomical Research Fellowship at the Zoological Society of London

Minutes of a meeting of the Committee for Research on the Okapi at the Zoological Society of London

Correspondence between the Yellow Fever Research Institute in Entebbe, Uganda and Geoffrey Marr Vevers regarding a shipment of Monkeys and Red River Hog for the Zoological Society of London

Correspondence between Cartwright Farmiloe and Geoffrey Marr Vevers regarding a research apiary

Correspondence between James Fisher and Geoffrey Marr Vevers regarding research into raven, crows, rooks and jackdaws