| Description | Includes:
-two letters from Robert Bloch, dated 12 April & 10 June 1984, concerning a portrait of Sir John Campbell. Also includes a conservation report and photographs of the portrait before and after cleaning
-Beard, Charles. 1934. 'Highmore's Scrapbook', The Connoisseur, May 1954, pp290-296
-Baker, C.H. Collins. 1918. 'A conversation piece by Joseph Highmore', The Connoisseur, August 1918, pp183-188 |
| Image Caption | Conservation report concerning work carried out to clean a portrait of Sir Joseph Campbell, dated 10 June 1985 |
| Photograph of a portrait of Sir Joseph Campbell before cleaning, c1985 |
| Photograph of a portrait of Sir Joseph Campbell after cleaning, c1985 |