Hammermeister, Heinrich
| Carl Weiße an Louis Spohr in Kassel | Leipzig, Montag 14. November 1831 | 1831111448 |
| Adolph Hesse an Louis Spohr in Kassel | Breslau, Mittwoch 15. November 1837 | 1837111531 |
| Carl Weiße an Louis Spohr in Kassel | Leipzig, Montag 14. November 1831 | 1831111448 |
| Adolph Hesse an Louis Spohr in Kassel | Breslau, Mittwoch 15. November 1837 | 1837111531 |