# Karl Nothhelfer
**Wikidata**: [Q94826151](https://www.wikidata.org/wiki/Q94826151)  
**Source**: https://4ort.xyz/entity/karl-nothhelfer


## References

1. Integrated Authority File
2. archINFORM
3. Catalog of the German National Library
4. Virtual International Authority File
5. [Source](https://kalliope-verbund.info/DE-611-BF-101794)
6. CONOR.SI
7. [archINFORM](https://www.archinform.net/service/wd_aiarch.php)