Letter from Martha King to Philip Lutley Sclater regarding her subscription to the Zoological Society of London
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 Richard Kippist, the Librarian of the Linnean Society of London, to Philip Lutley Sclater regarding the costs of meeting for scientific business at the Linnean Society
Correspondence with Geoffrey Marr Vevers regarding a delay to an expedition by Owen Kiralfy
Correspondence between Major Hamilton Kirk and Geoffrey Marr Vevers regarding a reception during the annual conference of the National Veterinary Medical Association, which was held at the Zoological Society of London
Correspondence between S Wilson Kitchen and Julian Sorell Huxley regarding the submission of his name to the Council of the Zoological Society of London, and views towards women serving on the Council
Correspondence between E E Kitchener and George Soper Cansdale regarding an exchange of animals with the Zoological Society of London
Letter regarding an offer to supply the Zoological Society of London with Racoons and a Black Bear, and a request for America White Pelicans