Musikschule <Ritzenbüttel>
| Eduard Marxsen an Louis Spohr in Kassel | Altona, Donnerstag 18. April 1844 | 1844041844 |
| Eduard Marxsen an Louis Spohr in Kassel | Altona, Donnerstag 18. April 1844 | 1844041844 |
| Eduard Marxsen an Louis Spohr in Kassel | Altona, Donnerstag 18. April 1844 | 1844041844 |
| Eduard Marxsen an Louis Spohr in Kassel | Altona, Donnerstag 18. April 1844 | 1844041844 |