Spohr, Louis : Lieder, Sopr Alt Ten Bass, op. 120
| Louis Spohr an Carl Koßmaly in Detmold | Kassel, Dienstag 24. September 1844 | 1844092413 |
| Louis Spohr an Moritz Hauptmann in Leipzig | Kassel, Dienstag 28. April 1846 | 1846042803 |
| Louis Spohr an Carl Elis in Halberstadt | Kassel, ab 18. September 1853 | 1853092016 |
| Louis Spohr an August Theodor Whistling in Leipzig | Kassel, Sonnabend 17. November 1855 | 1855111720 |