| Signature mark | NL 174/2692 |
|---|---|
| Subject | Brief |
| Author |
Risch, J. von |
| Recipient |
Mach, Ernst
|
| Title | Risch, J. von an Mach, Ernst |
| Places | Wien |
| Duration | 08.04.1908 |
| Scope | 4 S. ms. |
| Rights notice | CC BY-SA 4.0 |