# Carl Steffen
**Wikidata**: [Q112374269](https://www.wikidata.org/wiki/Q112374269)  
**Source**: https://4ort.xyz/entity/carl-steffen


## References

1. Integrated Authority File
2. Czech National Authority Database
3. Virtual International Authority File
4. [Source](https://viaf.org/viaf/data/viaf-20230206-links.txt.gz)
5. CiNii Research
6. National Library of Israel Names and Subjects Authority File