Devrient, Doris
| Louis Spohr an Wilhelm Speyer in Offenbach | Kassel, Sonntag 1. August 1824 | 1824080102 |
| Friedrich Rochlitz an Louis Spohr in Kassel | Leipzig, Montag 3. April 1826 | 1826040336 |
| Louis Spohr an Wilhelm Speyer in Offenbach | Kassel, Sonntag 1. August 1824 | 1824080102 |
| Friedrich Rochlitz an Louis Spohr in Kassel | Leipzig, Montag 3. April 1826 | 1826040336 |