Mozart, Wolfgang Amadeus : Davide penitente
| Adolph Hesse an Louis Spohr in Kassel | Breslau, Donnerstag 19. April 1838 | 1838041931 |
| Louis Spohr an Wilhelm Happ in Prag | Kassel, Sonnabend 23. Mai 1840 | 1840052310 |
| Carl Georg Firnhaber an Louis Spohr in Kassel | Hanau, Sonntag 19. November 1843 | 1843111948 |
| Adolph Hesse an Louis Spohr in Kassel | Breslau, Dienstag 18. April 1854 | 1854041831 |