Letters from Joseph Henry of the Smithsonian Institute, to Philip Lutley Sclater regarding botanical specimens from the Zoological Society of London and specimens of South American birds to be named and described for the Smithsonian Institute
Letters from Arthur Herbert to Philip Lutley Sclater regarding the collections of Graham Kerr left on board the Bolivia
Letter from Hubert von Herkomer to Philip Lutley Sclater, recommending his student C H Desmond as a fit and proper person to paint in the gardens of the Zoological Society of London
Letters from Higginson and Vigors to Philip Lutley Sclater regarding the proposed Regent's Canal Railway
Letter from Franz Martin Hilgendorf to Philip Lutley Sclater
Letters from Berkeley Hill to Philip Lutley Sclater regarding a report of the Council of the Zoological Society of London and requesting changes in the bylaws as regards sales and special general meetings
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
Letter from Thomas Hyde Hills to Philip Lutley Sclater regarding great coats for the keepers of the gardens of the Zoological Society of London
Letter from Edmund William Hunt Holdsworth to Philip Lutley Sclater regarding ornithology