Triest
| Moritz Westphal an Louis Spohr in Kassel | Berlin, Mittwoch 20. August 1834 | 1834082056 |
| Eduard von Lannoy an Louis Spohr in Kassel | Wien, Sonntag 9. Dezember 1838 | 1838120945 |
| Rudolph Hirsch an Louis Spohr in Kassel | Triest, Sonnabend 10. Juni 1843 | 1843061045 |
| Rudolph Hirsch an Louis Spohr in Kassel | Triest, Donnerstag 10. August 1843 | 1843081045 |
| Rudolph Hirsch an Louis Spohr in Kassel | Pisino, Dienstag 5. September 1843 | 1843090545 |
| Rudolph Hirsch an Louis Spohr in Kassel | Triest, Sonnabend 10. Juni 1843 | 1843061045 |
| Rudolph Hirsch an Louis Spohr in Kassel | Triest, Donnerstag 10. August 1843 | 1843081045 |