Frege, Christian Gottlob
Frege, Christian Gottlob
| Louis Spohr an Carl Friedrich Peters in Leipzig | Thierachern, Sonnabend 15. Juni 1816 | 1816061520 |
| Carl Georg Firnhaber an Louis Spohr in Kassel | Wiesbaden, Dienstag 4. April 1854 | 1854040449 |
| Livia Frege an Louis Spohr in Kassel | Leipzig, Montag 3. März 1856 | 1856030345 |