PORTLAND PAPERS. Vol. CCCCXCVIII (29/116{2}). General correspondence, arranged alphabetically. Edward Harley, 3rd Earl of Oxford: General correspondence: bef. 1755.
PORTLAND PAPERS. Vol. CCCCXCVII (29/116{1}). Correspondence with Martha, his wife; 1726-1749. Edward Harley, 3rd Earl of Oxford: Martha Harley, née Morgan; wife of Edward, 3rd Earl of Oxford: Correspondence between 3rd Lord and Lady Oxford: 1726-1749.