Mendelssohn Bartholdy, Felix : Konzerte, Vl Orch, op. 64
| Louis Spohr an Adolph Hesse in Breslau | Kassel, Montag 19. November 1849 | 1849111901 |
| Louis Spohr an Gottfried Herrmann in Lübeck | Kassel, Sonnabend 22. Januar 1853 | 1853012210 |
| Adolph Hesse an Louis Spohr in Kassel | Breslau, Dienstag 3. April 1855 | 1855040331 |
| Adolph Hesse an Louis Spohr in Kassel | Breslau, Mittwoch 18. November 1857 | 1857111831 |