Balfe, Michael
| Elisabeth Filipowicz an Louis Spohr in Kassel | London, Montag 24. September 1838 | 1838092440 |
| Edward Taylor an Louis Spohr in Kassel | London, Freitag 31. Mai 1839 | 1839053134 |
| Louis Spohr an Adolph Hesse in Breslau | Kassel, Mittwoch 16. Oktober 1839 | 1839101601 |
| Edward Taylor an Louis Spohr in Kassel | London, Freitag 24. Juni 1842 | 1842062434 |
| Edward Taylor an Louis Spohr in Kassel | London, Dienstag 20. September 1842 | 1842092034 |
| Thomas Williams an Louis Spohr in Kassel | London, Mittwoch 25. September 1850 | 1850092547 |
| Leo Kerbusch an Louis Spohr in Kassel | London, Sonntag 20. Oktober 1850 | 1850102040 |