Letters from Josiah McGregor to Philip Lutley Sclater regarding a Pilcomayo expedition

Letters from Sir Francis John Pakenham to Philip Lutley Sclater regarding the Picomayo expedition and Mr Kerr's collection

Letters from Sir Thomas Townsend Pears to Philip Lutley Sclater regarding an Abyssinian expedition, during which Mr William Jesse collected about 1250 specimens

Letter from T C T Reeve to Philip Lutley Sclater regarding an expedition that had been rescued, including Mr Kerr

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

Letter from Robert Falcon Scott to Philip Lutley Sclater regarding assistance with the National Antarctic Expedition

Letter from Lieutenant C Fourie, Director of the African Geographical Expedition regarding proposed plans for the expedition

Letters from James Thompson to Philip Lutley Sclater regarding the purchase of items for an expedition to India

Letter from John Samuel Budget to Peter Chalmers Mitchell requesting a grant from the Zoological Society of London towards the expenses of his expedition to Nigeria

Two volumes describe two voyages which he took: to West Indies, South America, East Indies, China, Cape of Good Hope, and St Helena between 1823 and 1833 on the H C Ship Berwickshire.