For Sir Edwin Ray Lankester, University College London Special Collections also holds a manuscript paper by Lankester sent to the zoologist Sir John Graham Kerr, 1922 (Ref: MS ADD 252); 13 letters to Karl Pearson - (Ref: PEARSON 738/8); letters relating to University College London business, 1875-1879 (Ref: COLLEGE CORRESPONDENCE); four letters to (Sir) Francis Galton - (Ref: GALTON 271/5, 142/2B, 133/2, 133/6); two letters to Sir John Scott Burdon-Sanderson , 1895 (Ref: MS ADD 179/4/59, 179/7/43); a letter to Sir Edwin Chadwick  (Ref: CHADWICK 1174); an undated letter to Arthur Birch, an undated letter to an unknown man, and an undated letter on Lankester's inability to write articles for the 'Encyclopaedia Britannica' for six months (Ref: MS MISC 3L); material in the papers of Sir William Ramsay (Ref: RAMSAY).
The Natural History Museum, London, holds papers of Lankester; letters to C E Fagan, 1898-1920 (Ref: DF939); 42 items of correspondence with Albert and R W T Gunther, 1884-1908 (Ref: L MSS GUNTHER COLL (20) ). The British Library, Manuscript Collections, holds correspondence with Macmillans, 1869-1919 (Ref: Add MS 55219) and four volumes of letters to J Moir relating to prehistoric flint discoveries in East Anglia, 1910-1928 (Ref: Add MSS 44968-71). Imperial College Library holds 54 letters to Thomas Huxley, 1872-1907 (Ref: B/HUXLEY). The Wellcome Library for the History and Understanding of Medicine holds correspondence with the Lister Institute (Ref: SA/LIS). The Royal College of Surgeons of England holds lecture notes, 1876. The Marine Biological Association of the United Kingdom holds Lankester's correspondence and papers as its honorary secretary, 1884-1888 (Ref: MB2.1). Oxford University, Museum of Natural History, holds letters to Sir E B Poulton, 1883-1899 and undated. Oxford University, Department of Zoology, holds correspondence. Leeds University, Brotherton Library, holds 33 letters to Sir Edmund Gosse, 1898-1927 (Ref: Library Publications no 3). The National Archives of Scotland holds letters to F Maitland (Ref: GD433/2/103).