| 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 |
| 1947 | 1853 January 13 | Charles Seymour | Hiram Sibley |
| 1948 | 1848 March 21 | Charles Seymour | Hiram Sibley |
| 1949 | 1854 July 28 | Charles Seymour | Hiram Sibley |
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