| Results | |||
| Note: A ? indicates the information presented is a 'best guess'. The information on the original letter is unknown or illegible and may not be completely accurate. | |||
| Letter Number | Letter Date | Written By | Written To |
| 2318 | 1860 February 14 | Joel Thayer | Hiram Sibley |
| 2319 | 1858 March 05 | Joel Thayer | Hiram Sibley |
| 2320 | 1858 March 27 | Joel Thayer | Hiram Sibley |
| 2321 | 1855 April 08 | Joel Thayer | Hiram Sibley |
| 2322 | 1858 April 14 | Joel Thayer | Hiram Sibley |
| 2323 | 1860 April 27 | Joel Thayer | Hiram Sibley |
| 2324 | 1858 May 11 | Joel Thayer | Hiram Sibley |
| 2325 | 1855 May 14 | Joel Thayer | Hiram Sibley |
| 2326 | 1858 May 20 | Joel Thayer | Hiram Sibley |
| 2327 | 1860 May 26 | Joel Thayer | Hiram Sibley |
| 2328 | 1859 July 18 | Joel Thayer | Hiram Sibley |
| 2329 | 1858 August 03 | Joel Thayer | Hiram Sibley |
| 2330 | 1858 November 17 | Joel Thayer | Hiram Sibley |
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