| RefNo | Title | Date |
| NL/GRE/28 | Family and friends letters to and from Maria Grenfell | c.1880-1944 |
| NL/GRE/7/1 | Arthur Grenfell letters to Maria Grenfell | 1915-1948 |
| NL/GRE/17/3 | Riversdale Grenfell letters to Maria Grenfell | 1914 |
| NL/GRE/16/2 | Francis Grenfell letters to Maria Grenfell and Riversdale Grenfell | 1899-1911 |
| NL/GRE/7 | Arthur Grenfell letters to Maria Grenfell | 1915-1949 |
| NL/GRE/28/2 | Family and friends letters to and from Maria Grenfell | 1880-1939 |
| NL/GRE/31/7 | Maria Grenfell notebooks | c.1890-1916 |
| NL/GRE/31/8 | Letters to Maria Grenfell | 1899-1930 |
| NL/GRE/17/1 | Riversdale Grenfell letters to Maria Grenfell | 1900-1912 |
| NL/GRE/28/6 | Juanita Bulteel letter to Maria Grenfell | c.1914-1916 |
| NL/GRE/21/3 | Letters about Riversdale Grenfell | 1914-1926 |
| NL/GRE/23/1 | Letters about the memorial fund for Francis Grenfell and Riversdale Grenfell | 1913-1955 |
| NL/GRE/23/3 | Letters about the memorial fund for Francis Grenfell and Riversdale Grenfell | 1916-1917 |
| NL/GRE/28/1 | Arthur R. Grenfell letters to Maria Grenfell | c.1880 |
| NL/GRE/28/5 | Lord Grenfell letters to Maria Grenfell | c.1890s-1926 |
| NL/GRE/28/4 | Family and friends letters to Maria Grenfell | 1880s-1940s |
| NL/GRE/19/6 | Letters about Francis Grenfell and Riversdale Grenfell | c.1920 |
| NL/GRE/16/5 | Francis Grenfell letters and diary entries to family and friends | 1911-1915 |
| NL/GRE/16/4 | Francis Grenfell letters to Maria Grenfell and Riversdale Grenfell | 1903-1915. |
| NL/GRE/28/3 | Family letters to Maria Grenfell | c.1880-1944 |
| NL/GRE/31 | Other correspondence | c.1890-1962 |
| NL/GRE/7/2 | Arthur Grenfell letters to Maria Grenfell | 1944-1949 |
| NL/GRE/16/8 | Francis Grenfell letters and diary entries to family and friends | 1914-1915 |
| NL/GRE/20/1 | Letters about Francis Grenfell | 1914-1918 |