# Karl Greifenstein
**Wikidata**: [Q94876034](https://www.wikidata.org/wiki/Q94876034)  
**Source**: https://4ort.xyz/entity/karl-greifenstein


## References

1. Integrated Authority File
2. Catalog of the German National Library
3. [Source](https://kalliope-verbund.info/DE-611-BF-110128)