| 6496 | Public Record Office of Northern Ireland | D/1270 | 1851 | Letter from Mrs Whitelaw, Lebanon, Pennsylvania, Uni... | Jackson and Whitelaw Papers |
| 6497 | Public Record Office of Northern Ireland | D/1270/1-3 | c.1844 | 3 letters from Sarah Jackson, Clones, County Fermana... | Jackson and Whitelaw Papers |