Letters from Ernst Heinrich Philipp August Haeckel to Philip Lutley Sclater
Letters from Carl Hagenbeck to Philip Lutley Sclater regarding his catalogue of animals for sale to the Zoological Society of London, and an order from the British government for the supply of dromedaries
Letter from Carl Hagenbeck to Peter Chalmers Mitchell regarding his shipment of a buffalo to the Zoological Society of London
Letters from Wilhelm Hagenbeck to Philip Lutley Sclater regarding the Zoological Society of London's account, and a request to purchase some lions
Letter to Sir Edward Hallstrom, Executive Director of Taronga Zoological Park Trust, regarding the International Union of Directors of Zoological Gardens
Correspondence regarding a request for birds and mammals from Africa for the Zoological Society of London
Letter from William Tyler Hamilton saying the elephant had arrived and appeared least worse for it. It was a valuable addition to the collection. They are likely to lost the last fine male as it was showing signs of enlargement of the epiglottis which proved fatal in the female
Letter from John D Hamlyn to Peter Chalmers Mitchell regarding a gorilla and a chimpanzee for sale
Letter from C F Hancock to Philip Lutley Sclater regarding the cancellation of a subscription to the Zoological Society of London
Letter from W Hancock to Philip Lutley Sclater regarding the sale of a pair of blue faced gorillas to the Zoological Society of London