Spohr, Louis : Potpourris, Vl Orch, op. 23
| Louis Spohr an Ambrosius Kühnel in Leipzig | Stuttgart, Freitag 5. Februar 1808 | 1808020520 |
| Louis Spohr an Ambrosius Kühnel in Leipzig | Gotha, Donnerstag 11. August 1808 | 1808081120 |
| Louis Spohr an Xaver Keller in Petershausen | Gotha, Montag 26. Dezember 1808 | 1808122617 |
| Louis Spohr an Ambrosius Kühnel in Leipzig | Gotha, Montag 10. September 1810 | 1810091020 |