Correspondence between R E Glover and George Soper Cansdale regarding the supply of West African monkeys for research work in England

Letters from Robert Oliver Cunningham to Philip Lutley Sclater regarding his research and other papers

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

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

Correspondence between Solly Zuckerman and Sir Marcus Sieff, Chairman of Marks and Spencer Ltd, regarding the nutritional work that was being undertaken by the research institute of the Zoological Society of London, and seeking support for the Zoological Society of London