# Karl Kayser
**Wikidata**: [Q22692542](https://www.wikidata.org/wiki/Q22692542)  
**Source**: https://4ort.xyz/entity/karl-kayser


## References

1. Catalog of the German National Library
2. [Source](http://viaf.org/viaf/data/viaf-20170101-links.txt.gz)
3. [Source](https://kalliope-verbund.info/DE-611-BF-56177)
4. [Source](https://kalliope-verbund.info/DE-611-BF-107987)
5. Virtual International Authority File