| 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 |
| 1183 | 1862 February 06 | John Jr. Horn | Hiram Sibley |
| 1184 | 1862 April 11 | John Jr. Horn | Hiram Sibley |
| 1185 | 1862 July 03 | John Jr. Horn | Hiram Sibley |
| 1186 | 1863 October 26 | John Jr. Horn | Hiram Sibley |
| 1187 | 1863 November 10 | John Jr. Horn | Hiram Sibley |
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