Schmitt, Aloys : Valeria
| Wilhelm Speyer an Louis Spohr in Kassel | Frankfurt am Main, Sonnabend 1. Dezember 1832 | 1832120132 |
| Aloys Schmitt an Louis Spohr in Kassel | Frankfurt am Main, Montag 26. August 1833 | 1833082645 |
| Wilhelm Speyer an Louis Spohr in Kassel | Frankfurt am Main, Sonnabend 1. Dezember 1832 | 1832120132 |
| Aloys Schmitt an Louis Spohr in Kassel | Frankfurt am Main, Montag 26. August 1833 | 1833082645 |