Devrient, Karl
| Louis Spohr an Wilhelm Speyer in Offenbach | Kassel, Montag 24. Januar 1825 | 1825012402 |
| Adolph Hesse an Louis Spohr in Kassel | Breslau, Freitag 3. April 1857 | 1857040331 |
| Louis Spohr an Wilhelm Speyer in Offenbach | Kassel, Montag 24. Januar 1825 | 1825012402 |
| Adolph Hesse an Louis Spohr in Kassel | Breslau, Freitag 3. April 1857 | 1857040331 |