Letters from Sir Clement Lloyd Hill to Philip Lutley Sclater regarding the way in which animals and birds were shot down in new countries, and draft reply concerning papers put out by the Zoological Society of London for the protection of birds
Letters from Thomas Hillier to Philip Lutley Sclater regarding complaints made about the nuisance arising from the drainage of the gardens of the Zoological Society of London into Regent's Canal
Letters from Sir Joseph Dalton Hooker to Philip Lutley Sclater regarding collections of birds and botany
Letters from John Alexander Hope to Philip Lutley Sclater regarding his subscription and election of the fellowship of the Zoological Society of London
Letters from William Henry Hudson to Philip Lutley Sclater regarding cuckoos, shipments of birds to the Smithsonian, Woodpeckers in Argentina, Blackbirds and other birds
Letters from Martin Theodor von Hueglin to Philip Lutley Sclater regarding his departure for Spitzbergen and his treasures of the three natural kingdoms
Letters from Hunter and English to Philip Lutley Sclater regarding the well pumps in the gardens of the Zoological Society of London, with a report on the well and pumps
Letters from Hussey, H C to Philip Lutley Sclater regarding the feeding of goats to the python at the Zoological Society of London
Letters from Thomas Henry Huxley to Philip Lutley Sclater asking about available birds for dissection, meetings of the Council of the Zoological Society of London, proofs and woodcuts for a paper, specimens of birds and the Marine Biological Association
Letters from William Henry Huxley to Philip Lutley Sclater regarding alligators of North America and other matters