Luckhardt <Kassel>
| Louis Spohr an Ferdinand Böhme in Dordrecht | Kassel, Montag 9. April 1849 | 1849040910 |
| Johann Friedrich Schwencke an Louis Spohr in Kassel | Hamburg, Sonntag 26. August 1849 | 1849082643 |
| Otto Gerke an Louis Spohr in Kassel | Detmold, Montag 21. Januar 1850 | 1850012150 |
| Louis Spohr an Bartholf Senff in Leipzig | Kassel, Sonnabend 24. August 1850 | 1850082426 |
| Louis Spohr an Elise Schmezer in Braunschweig | Kassel, Freitag 25. April 1851 | 1851042514 |
| Johann Friedrich Schwencke an Louis Spohr in Kassel | Hamburg, Montag 5. April 1852 | 1852040543 |
| Louis Spohr an Ferdinand Böhme in Dordrecht | Kassel, Donnerstag 20. April 1854 | 1854042010 |
| Carl Overweg an Louis Spohr in Kassel | Naumburg an der Saale, Mittwoch 24. Januar 1855 | 1855012446 |
| Louis Spohr an August Theodor Whistling in Leipzig | Kassel, Sonnabend 17. November 1855 | 1855111720 |
| Otto Gerke an Louis Spohr in Kassel | Paderborn, Mittwoch 19. November 1856 | 1856111950 |
| Friedrich Wilhelm Markull an Louis Spohr in Kassel | Berlin, Sonntag 10. Mai 1857 | 1857051044 |
| Louis Spohr an Ferdinand Böhme in Dordrecht | Kassel, Montag 9. April 1849 | 1849040910 |
| Johann Friedrich Schwencke an Louis Spohr in Kassel | Hamburg, Sonntag 26. August 1849 | 1849082643 |
| Otto Gerke an Louis Spohr in Kassel | Detmold, Montag 21. Januar 1850 | 1850012150 |
| Louis Spohr an Bartholf Senff in Leipzig | Kassel, Sonnabend 24. August 1850 | 1850082426 |
| Louis Spohr an Elise Schmezer in Braunschweig | Kassel, Freitag 25. April 1851 | 1851042514 |
| Johann Friedrich Schwencke an Louis Spohr in Kassel | Hamburg, Montag 5. April 1852 | 1852040543 |
| Louis Spohr an Ferdinand Böhme in Dordrecht | Kassel, Donnerstag 20. April 1854 | 1854042010 |
| Carl Overweg an Louis Spohr in Kassel | Naumburg an der Saale, Mittwoch 24. Januar 1855 | 1855012446 |
| Louis Spohr an August Theodor Whistling in Leipzig | Kassel, Sonnabend 17. November 1855 | 1855111720 |
| Otto Gerke an Louis Spohr in Kassel | Paderborn, Mittwoch 19. November 1856 | 1856111950 |
| Friedrich Wilhelm Markull an Louis Spohr in Kassel | Berlin, Sonntag 10. Mai 1857 | 1857051044 |