| RefNo | Title | Date |
| NL/31/7 | Augustine Birrell letters to Katherine Lyttelton | 1895-1930 |
| NL/38/16 | Articles and notes about and by Katherine Lyttelton | 1891-1893 |
| NL/31/2 | Alfred Lyall letters to Katherine Lyttelton | 1892-c.1902 |
| NL/1/2 | Neville Lyttelton letters to family | 1865-1875 |
| NL/8/6 | Katherine Lyttelton letters to Neville Lyttelton | 1894-1898 |
| NL/38/10 | Unionist and separatist movements in Ireland | 1912-1913 |
| NL/7/7 | Katherine Lyttelton letters to family | c.1873-1927 |
| NL/10/3 | Katherine Lyttelton letters to Hilda Grenfell | 1900-1923 |
| NL/10/4 | Katherine Lyttelton letters to Hilda Grenfell | 1900-1923 |
| CS/CS/1 | Westfield College | 1850-1950 |
| NL/2 | Neville Lyttelton letters to Katherine Lyttelton | 1883-1926 |
| NL/1 | Neville Lyttelton letters to family | 1854-1924 |
| NL/1/6 | Neville Lyttelton letters to family | 1893-1909 |
| NL/7/5 | Katherine Lyttelton letters to family | 1888-1898 |
| NL/28/4 | Various friends (miscellaneous) letters to Neville Lyttelton | 1900-1912 |
| NL/30/9 | Friends (miscellaneous) letters to Katherine Lyttelton | 1912-1914 |
| NL/GRE/33/18 | Photographs of Neville Lyttelton | 1907-1911 |
| NL | LYTTELTON FAMILY | c.1782-1940 |
| CS | CAROLINE ANNE JAMES SKEEL AND FAMILY | 1785-1964 |