Letters from Sir Richard Owen to Philip Lutley Sclater on subjects such as plates of the Dodo, papers on bird bones, notes on the dissection of a penguin, cetacean drawings, chambered shells, drawings of birds from Madras, photographs of harpagornis and his papers on diornis
Letter from Julien Francois Desjardins to Edward Charlesworth, Assistant Secretary of the Zoological Society of London, regarding the Proceedings of the Zoological Society of London and papers for publication
Letter from George Stewardson Brady to Philip Lutley Sclater regarding contributions to the Proceedings of the Zoological Society of London
Letter from Octavius Pickard Cambridge to Philip Lutley Sclater requesting to include a paper in the Proceedings of the Zoological Society of London
Letter from Benjamin Clarke to Philip Lutley Sclater regarding publications of the Zoological Society of London
Correspondence with Francis Hemming regarding his report on source papers in the structure of science, meeting of the Zoological Record Committee, memorandums on the Zoological Record, conditions of the Fellowship of the Zoological Society of London, revision of the Bye-Laws, the Secretaryship, visits to Whipsnade, questions to be put to candidates by the President, meetings of the Council and a paper titled 'An Auxiliary Method of Taxonomic Descrption