| Reference number | Title | Date |
| NLB/6/583 | Copy letter from Herbert Rix, to Professor William Henry Flower, Fellow of the Royal Society | 4 June 1892 |
| MC/14 | Volume 14 | 1885-1888 |
| NLB/1/437 | Copy letter from Herbert Rix, to Dr Philip Lutley Sclater | 30 March 1887 |
| NLB/25/125 | Copy letter from Theodore E James, to Dr Philip Lutley Sclater, Fellow of the Royal Society, 3 Hanover Square, W. | 16 October 1902 |
| MC/10/184 | Letter from John A [Alexander] Harvie-Brown, Dunipace, Falkirk, to P L [Philip Lutley] Sclater, Zoological Society rooms, Hanover Square | 29 December 1874 |
| NLB/2/356 | Copy letter from Herbert Rix, to Dr Philip Lutley Sclater, Fellow of the Royal Society | 11 May 1888 |
| NLB/2/146 | Copy letter from Herbert Rix, to Philip Lutley Sclater, Fellow of the Royal Society and Secretary of the Zoological Society | 31 January 1888 |
| NLB/4/22 | Copy letter from Herbert Rix, to Dr Philip Lutley Sclater, Fellow of the Royal Society | 29 January 1890 |
| NLB/2/509 | Copy letter from Herbert Rix, to Dr Philip Lutley Sclater, Fellow of the Royal Society | 23 July 1888 |
| NLB/6/349 | Copy letter from Herbert Rix, to Dr Philip Lutley Sclater, Fellow of the Royal Society | 22 April 1892 |
| NLB/3/476 | Copy letter from Herbert Rix, to Dr [Philip Lutley] Sclater, Fellow of the Royal Society | 18 June 1889 |
| NLB/5/145 | Copy letter from Herbert Rix, to Dr [Philip Lutley] Sclater, Fellow of the Royal Society | 2 April 1891 |
| NLB/3/1060 | Copy letter from Herbert Rix, to Mr Pilbeam | 2 January 1890 |
| NLB/5/313 | Copy letter from Herbert Rix, to Dr Philip Lutley Sclater, Fellow of the Royal Society | 12 May 1891 |
| NLB/7/367 | Copy letter from Herbert Rix, to Dr Philip Lutley Sclater, Fellow of the Royal Society, Chairman of the Scientific Relief Fund | 31 January 1893 |
| NLB/7/691 | Copy letter from Herbert Rix, to Dr Philip Lutley Sclater, Fellow of the Royal Society | 11 April 1893 |
| NLB/7/373 | Copy letter from Herbert Rix, to Dr Philip Lutley Sclater, Fellow of the Royal Society | 1 February 1893 |
| NLB/20/33 | Copy letter from Michael Foster, to Dr Philip Lutley Sclater, Fellow of the Royal Society | 19 January 1990 |
| NLB/7/709 | Copy letter from Herbert Rix, to Dr Philip Lutley Sclater, Fellow of the Royal Society | 12 April 1893 |
| NLB/7/749 | Copy letter from Herbert Rix, to Dr Philip Lutley Sclater, Fellow of the Royal Society | 18 April 1893 |
| NLB/8/157 | Copy letter from Herbert Rix, to Dr Philip Lutley Sclater, Fellow of the Royal Society | 22 July 1893 |
| NLB/7/1035 | Copy letter from Herbert Rix, to Dr Philip Lutley Sclater, Fellow of the Royal Society, Chairman of the Scientific Relief Committee | 19 June 1893 |
| NLB/8/597 | Copy letter from Herbert Rix, to Sir John Evans, Treasurer, Royal Society | 22 November 1893 |
| NLB/8/634 | Copy letter from Herbert Rix, to Dr Philip Lutley Sclater, Fellow of the Royal Society | 28 November 1893 |
| NLB/10/312 | Copy letter from Herbert Rix, to Lord Rayleigh [John William Strutt], Secretary, Royal Society; Michael Foster; [Andrew Ainslie] Common; [Philip Lutley] Sclater; [Percy Alexander] MacMahon; and [Wilfred Hudleston] Hudleston | 7 November 1894 |
| NLB/10/602 | Copy letter from Herbert Rix, to Dr Philip Lutley Sclater, Fellow of the Royal Society | 2 January 1895 |
| NLB/9/401 | Copy letter from Herbert Rix, to Dr Sclater, [Fellow of the Royal Society] | 11 May 1894 |
| NLB/11/336 | Copy letter from Herbert Rix, to Doctor Philip Lutley Sclater, Fellow of the Royal Society | 6 June 1895 |
| NLB/13/74 | Copy letter from Robert William Frederick Harrison, to Dr Philip Lutley Sclater, Fellow of the Royal Society, Zoological Society, 3 Hanover Square, W. | 5 June 1896 |
| NLB/8/235 | Copy letter from Theodore E James, to Dr Philip Lutley Sclater, Fellow of the Royal Society | 5 August 1893 |
| NLB/12/457 | Copy letter from Herbert Rix, to Professor Alfred Newton, Fellow of the Royal Society, Magdalene College, Cambridge | 21 February 1896 |
| NLB/12/832 | Copy letter from Robert William Frederick Harrison, to Dr Philip Lutley Sclater, Fellow of the Royal Society | 14 May 1896 |
| NLB/15/75 | Copy letter from Michael Foster, to Dr Philip Lutley Sclater, Fellow of the Royal Society | 18 June 1897 |
| NLB/15/489 | Copy letter from Robert William Frederick Harrison, to Dr Philip Lutley Scalter, Fellow of the Royal Society | 13 October 1897 |
| NLB/15/480 | Copy letter from Robert William Frederick Harrison, to Dr Philip Lutley Sclater, Fellow of the Royal Society | 13 October 1897 |
| NLB/16/359 | Copy letter from Arthur William Rucker, to Sir Clements R Markham, President of the Royal Geographical Society | 21 March 1898 |
| NLB/19/654 | Copy letter from Robert William Frederick Harrison, to Philip Lutely Sclater, Fellow of the Royal Society, Zoological Society, 3 Hanover Square, W. | 17 November 1899 |
| NLB/21/602 | Copy letter from Robert William Frederick Harrison, to Dr Philip Lutley Sclater, Fellow of the Royal Society | 17 December 1900 |
| NLB/23/2/73 | Copy letter from Sir Michael Foster, to Philip Lutley Sclater, Fellow of the Royal Society | 22 May 1901 |
| NLB/32/241 | Copy letter from Robert William Frederick Harrison, to [Messrs Harrison & Sons] | 5 February 1906 |
| NLB/34/190 | Copy letter from Robert William Frederick Harrison, to Dr Philip Lutley Sclater, Fellow of the Royal Society | 10 December 1906 |
| NLB/34/170 | Copy letter from Archibald Geikie, to [Philip Lutley] Sclater, [Fellow of the Royal Society] | 8 December 1906 |
| NLB/35/614 | Copy letter from Robert William Frederick Harrison, to Dr Philip Lutley Sclater, Fellow of the Royal Society | 19 June 1907 |
| NLB/36/763 | Copy letter from Robert William Frederick Harrison, to Dr Philip Lutley Sclater, Fellow of the Royal Society | 12 December 1907 |
| NLB/38/186 | Copy letter from Robert William Frederick Harrison, to Dr Philip Lutley Sclater, Fellow of the Royal Society | 24 June 1908 |
| NLB/41/289 | Copy letter from Robert William Frederick Harrison, to Dr Philip Lutley Sclater, Fellow of the Royal Society | 16 November 1909 |
| NLB/43/430 | Copy letter from Robert William Frederick Harrison, to Philip Lutley Sclater, Fellow of the Royal Society | 11 January 1911 |
| RR/10/22 | Referee's report by Philip Lutley Sclater, on a paper 'The embryology of monotremata and marsupialia.—Part I' by William Hay Caldwell | 18 July 1887 |
| RR/15/11 | Referee's report by Philip Lutley Scalter, on a paper 'The distribution of vertebrate animals in India, Ceylon & Burma' by William Thomas Blanford | 27 December 1900 |
| EC/1861/12 | Sclater, Philip Lutley: certificate of election to the Royal Society | |
| IM/Maull/004035 | Sclater, Philip Lutley | nd |
| NLB/2/69 | Copy letter from Herbert Rix, to Philip Lutley Sclater, Fellow of the Royal Society | 3 January 1888 |
| NLB/8/689 | Copy letter from Herbert Rix, to Dr Philip Lutley Sclater, Fellow of the Royal Society | 8 December 1893 |
| NLB/8/1028 | Copy letter from Herbert Rix, to Dr Henry Woodward, Fellow of the Royal Society | 12 February 1894 |
| RR/6/204 | Letter from Philip Lutley Sclater, to George Gabriel Stokes, regarding a paper 'On fossil remains of equines from central and South America referable to Equus conversidens, Ow., Equus tan, Ow., and Equus arcidens, Ow' by Richard Owen | 23 March 1869 |
| MC/10/181 | Letter from Howard Samms, Bellair, Reigate, to P L [Philip Lutley] Sclater | 22 December 1874 |
| MC/10/179 | Letter from Edward R Alston, 3 Old Quebec Street, Portman Square, to P L [Philip Lutley] Sclater, 11 Hanover Square | 16 December 1874 |
| MC/10/199 | Letter from P L [Philip Lutley] Sclater, Zoological Society of London, 11 Hanover Square, London, to Professor [Thomas Henry] Huxley, [Secretary of the Royal Society] | 20 January 1875 |
| MC/10/172 | Letter from H W [Henry Wemyss] Feilden, Paymaster of the Royal Artillery, to Ph L [Philip Lutley] Sclater | 23 November 1874 |
| MC/10 | Volume 10 of miscellaneous correspondence regarding business matters, sent to the Royal Society | July 1873-1876 |
| MS/427/357 | Copy letter from [Michael] Foster, Secretary of the Royal Society; to [Philip Lutley] Sclater, FRS, Secretary of the Zoological Society | 1 May 1884 |
| MC/13 | Volume 13 of miscellaneous correspondence regarding business matters, sent to the Royal Society | 1884 |
| MC/13/38 | Letter from P L [Philip Lutley] Sclater, Secretary, Zoological Society of London, 11 Hanover Square, London, to [Thomas Henry] Huxley, President of the Royal Society | 31 March 1884 |
| AP/50/15 | Unpublished paper, 'On the geographical and geological relations of the fauna and flora of Palestine' by [Henry Baker] Tristram | 1868 |