| 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 |
| 1966 | 1851 January 10 | Charles L. Shepard | Hiram Sibley |
| 1967 | 1850 December 31 | Charles L. Shepard | Hiram Sibley |
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