| Letter to Thomas Clegg | 21 July 1857 | Livingstone, David, 1813-1873 | Clegg, Thomas | Hadley Green, Barnet | 3 | 180 x 110 | autographs (manuscripts); letters | Private owner | MS. 20313 | Phillips' Cat., 11 Dec. 1980, lot 140. Invaluable (Bloomsbury Auctions, New York, NY), 12 Dec. 2007, link (accessed 13 Apr. 2015). Invaluable (Bloomsbury Auctions, New York, NY), 22 Jul. 2010, link (accessed 13 Apr. 2015). | Letters, 0558.7 | liv_001064 |
| Letter to [Thomas Clegg?] | April 1857-February 1858 | Livingstone, David, 1813-1873 | Clegg, Thomas | [Britain] | | 78 x 112 | autographs (manuscripts); fragments (object portions); letters | David Livingstone Centre: Not located | MS. 10779 | | Letters and Letter Fragments, 10 | liv_002899 |
| Letter to [Thomas Clegg?] | [23 February 1858?] | Livingstone, David, 1813-1873 | Clegg, Thomas | [18 Hart St., London or Burnback, Hamilton] | | 48 x 119 | autographs (manuscripts); fragments (object portions); letters | David Livingstone Centre: Not located | MS. 10779 | | Letters and Letter Fragments, 09 | liv_002898 |