Friedländer, Bertha
| Adolph Hesse an Louis Spohr in Kassel | Breslau, Freitag 19. Mai 1843 | 1843051931 |
| Adolph Hesse an Louis Spohr in Kassel | Breslau, Freitag 16. August 1844 | 1844081631 |
| Adolph Hesse an Louis Spohr in Kassel | Breslau, Mittwoch 21. August 1844 | 1844082131 |