Barker, Laura : Duos, Vl Kl
| Thomas Barker an Louis Spohr in Kassel | Thirkleby Thirsk, Dienstag 15. Dezember 1835 | 1835111514 |
| Louis Spohr an Thomas Barker in Thirkleby Thirsk | Kassel, Donnerstag 14. Januar 1836 | 1836011414 |
| Thomas Barker an Louis Spohr in Kassel | Thirkleby Thirsk, Dienstag 15. Dezember 1835 | 1835111514 |
| Louis Spohr an Thomas Barker in Thirkleby Thirsk | Kassel, Donnerstag 14. Januar 1836 | 1836011414 |