| RefNo | Title | Date |
| NL/GRE/17/4 | Riversdale Grenfell letters to family | c.1914 |
| NL/GRE/28/2 | Family and friends letters to and from Maria Grenfell | 1880-1939 |
| NL/GRE/28/6 | Juanita Bulteel letter to Maria Grenfell | c.1914-1916 |
| NL/GRE/28/3 | Family letters to Maria Grenfell | c.1880-1944 |
| 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 |