Böhm, Joseph
| Wilhelm Speyer an Louis Spohr in Kassel | Offenbach, Mittwoch 24. September 1823 | 1823092432 |
| Louis Spohr an Wilhelm Speyer in Offenbach | Kassel, Montag 29. September 1823 | 1823092902 |
| Wilhelm Speyer an Louis Spohr in Kassel | Offenbach, Mittwoch 24. September 1823 | 1823092432 |
| Louis Spohr an Wilhelm Speyer in Offenbach | Kassel, Montag 29. September 1823 | 1823092902 |