Includes:
-letter from Simon Dickinson, Christie's, dated 18 September 1979, concerning portraits of William Herrick and his wife
-letter from William Hood, The Bowes Museum, dated 7 August 1980 concerning portraits of the Rostall family
-letter from Nikolaus Pevsner, The Buildings of England, dated 11 September 1958, concerning a portrait of W. Piggott at Doddershall House
-Cummings, Frederick (1971) 'Joseph Wright at the National Gallery', The Art Quarterly, Vol. XXXIV, No.4, 1971, pp475-482
-letter from David Moore-Gwyn, Sotheby's, dated 14 July 1983, concerning a portrait of an unknown man