# Jan Szumski

> Polish historian

**Wikidata**: [Q28671863](https://www.wikidata.org/wiki/Q28671863)  
**Source**: https://4ort.xyz/entity/jan-szumski


## References

1. IdRef
2. Czech National Authority Database
3. [Source](https://viaf.org/viaf/data/viaf-20230206-links.txt.gz)
4. Virtual International Authority File
5. Polish Science
6. NUKAT