Auber, Daniel-François-Esprit : La part du Diable
| Wilhelm Speyer an Louis Spohr in Kassel | Frankfurt am Main, Sonnabend 12. August 1843 | 1843081232 |
| E. Miller an Louis Spohr in Kassel | Kassel, Dienstag 6. Mai 1845 | 1845050644 |
| Wilhelm Speyer an Louis Spohr in Kassel | Frankfurt am Main, Sonnabend 12. August 1843 | 1843081232 |
| E. Miller an Louis Spohr in Kassel | Kassel, Dienstag 6. Mai 1845 | 1845050644 |