PORTLAND PAPERS. Vol. CXLV (29/67{1}). Edward Harley, 3rd Earl of Oxford - Nathaniel Harley. Nathaniel Harley, son of Sir E Harley: Letters to his family: 1682-1720.
PORTLAND PAPERS. Vol. CXLVII (29/68{1}). Abigail Hay, Countess of Kinnoull. Abigail Hay, née Harley; wife of George, 8th Earl of Kinnoull: Letters to her aunt, A. Harley: bef. 1726.