| 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 |
| 1487 | 1855 April 25 | Horace Mixer | Hiram Sibley |
| 1488 | 1851 July 02 | Horace Mixer | Hiram Sibley |
| 1489 | 1851 July 18 | Horace Mixer | Hiram Sibley |
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