Letters from George John Romanes to Philip Lutley Sclater regarding research into whether mutilations are ever inherited and Weismann's theory of heredity
Letters from Lionel Walter Rothschild, 2nd Baron Rothschild, to Philip Lutley Sclater regarding an expedition to the Sandwich Islands, papers on birds of the Sandwich Islands, drawings of a Rail, ornithological exhibitions, the sale of a rhinoceros, his drawing of a rhinoceros to be published in the Proceedings of the Zoological Society of London, his Cassowaries at Tring, a transfer of Tragelaphus, Galapagos Tortoises, Eclectus Parrots, Lemurs and Zebras
Letters from Nathaniel Charles Rothschild to Philip Lutley Sclater requesting larvae of Biston Hirtaria and a live marten caught in Wales to be deposited at the Zoological Society of London
Letters from J & R Kemp and Co to Philip Lutley Sclater regarding Regent's Canal City and Docks Railway Bill
Letters from William Saville Kent of the Museum and Institute of Pisciculture Society Limited, to Philip Lutley Sclater regarding the establishment of a marine observatory and laboratory in connection with the Brighton Aquarium, his appointment as Inspector of Fisheries to the Government of Tasmania, his application to become a Fellow of the Zoological Society of London, his inspection of the fish house, enquiries about the vacant post of Prosector, and a proposed British Zoological Station for the study of marine animals and plats with relation to the advancement of the sciences of biology and economic pisciculture
Letters from Francis Knollys to Philip Lutley Sclater regarding a male kangaroo and an alligator to be sent from Sandringham to the Zoological Society of London
Letters from Lord Alfred Henry Paget to Philip Lutley Sclater regarding visits to the Zoological Society of London
Letters from Sir Thomas Townsend Pears to Philip Lutley Sclater regarding an Abyssinian expedition, during which Mr William Jesse collected about 1250 specimens
Letters from Henry Pollock to Philip Lutley Sclater regarding Brighton Aquarium and the validity of proxies at the general meetings of the Zoological Society of London
Letters from Spencer Ponsonby to Philip Lutley Sclater regarding membership and Fellowship of the Zoological Society of London