# Klaus Hack
**Wikidata**: [Q95251602](https://www.wikidata.org/wiki/Q95251602)  
**Source**: https://4ort.xyz/entity/klaus-hack


## References

1. Catalog of the German National Library
2. Czech National Authority Database
3. [The Fine Art Archive](https://cs.isabart.org/person/66364)
4. The Fine Art Archive