Gesangverein <Wolfenbüttel>
| Eduard Otto an Louis Spohr in Kassel | Braunschweig, Donnerstag 12. September 1844 | 1844091246 |
| Eduard Otto an Louis Spohr in Kassel | Braunschweig, Donnerstag 12. September 1844 | 1844091246 |
| Eduard Otto an Louis Spohr in Kassel | Braunschweig, Donnerstag 12. September 1844 | 1844091246 |
| Eduard Otto an Louis Spohr in Kassel | Braunschweig, Donnerstag 12. September 1844 | 1844091246 |