# Karl Büttinghausen
**Wikidata**: [Q55901981](https://www.wikidata.org/wiki/Q55901981)  
**Source**: https://4ort.xyz/entity/karl-b-ttinghausen


## References

1. Integrated Authority File
2. CERL Thesaurus
3. VcBA (identifier)
4. [Source](http://thesaurus.cerl.org/record/cnp00388778)
5. Virtual International Authority File