| RefNo | Title | Date |
| NL/31/11 | Janet Ward letters to Katherine Lyttelton | 1903 |
| NL/31 | Friends letters to Katherine Lyttelton | 1888-1936 |
| NL/30/8 | Friends (miscellaneous) letters to Katherine Lyttelton | 1908-1911 |
| NL/30/11 | Friends (miscellaneous) letters to Katherine Lyttelton | 1914-1916 |
| NL/30/13 | Friends (miscellaneous) letters to Katherine Lyttelton | 1926-1940 |
| NL | LYTTELTON FAMILY | c.1782-1940 |