# Józef Olszewski
**Wikidata**: [Q96464758](https://www.wikidata.org/wiki/Q96464758)  
**Source**: https://4ort.xyz/entity/j-zef-olszewski-q96464758


## References

1. [Source](https://aleph.nkp.cz/F/?func=find-c&local_base=aut&ccl_term=ica=js2008439211&CON_LNG=ENG)
2. NUKAT
3. Bibliography of the History of the Czech Lands
4. MAK