| Manuscripts for: Cassopolis | |||||||
| Number | Stampless(s)/Cover(c) | State | Date | Year | Marking | County | On ErniesMichigan.com |
| Privately Owned | s | MI | 07-10 | 1843 | 18 3/4 56 1/4 75 | cas | View Letters |
| Privately Owned | s | MI | 08-14 | 1845 | Paid 5 | cas | View Letters |

| Manuscripts for: Cassopolis | |||||||
| Number | Stampless(s)/Cover(c) | State | Date | Year | Marking | County | On ErniesMichigan.com |
| Privately Owned | s | MI | 07-10 | 1843 | 18 3/4 56 1/4 75 | cas | View Letters |
| Privately Owned | s | MI | 08-14 | 1845 | Paid 5 | cas | View Letters |