The collection consists of:
- Papers of Sir Robert William Hay, 1805-52, including journals, correspondence, papers and drawings
- Papers of Edward William Auriol Drummond-Hay, 1829-45, including journals, correspondence, and notebooks
- Papers of Sir John Hay Drummond-Hay, 1838-1901, including journals, diaries and correspondence
- Papers of Sir Robert Hay Drummond-Hay, 1856-1924, including journals and correspondence
- Papers of Alice Emily Drummond-Hay, 1866-1938, including correspondence, a history of the Drummond-Hay family and translations of a novel
- Papers of Cicely Eleanor Meade-Waldo, 1856-1925, including journals, correspondence and notebooks
- Miscellaneous papers of the Drummond-Hay family, 1771-1951