found: Her The rainbow comes and goes, 1958.
found: Webster's biog. dic, 80(under Cooper, Alfred Duff: Lady Diana Manners, dau. of the 8th Duke of Rutland)
found: WW, 81(Cooper, Lady Diana (Diana, Viscountess Norwich))
found: Debrett's, 72-73:p. 853 (Lady Diana Olivia Winifred Maud Manners, Dowager Viscountess Norwich; known as Lady Diana Cooper)
found: Brit. Lib. auth. file, Jan. 19, 2004(hdg.: Cooper, Diana, 1892-1986)
found: LC database, Mar. 21, 2006(hdg.: Cooper, Diana, Lady, 1892- ; usage: Diana Cooper)