# Leon Janczak
**Wikidata**: [Q29016354](https://www.wikidata.org/wiki/Q29016354)  
**Source**: https://4ort.xyz/entity/leon-janczak


## References

1. [Source](https://bs.sejm.gov.pl/F?func=find-acc&acc_sequence=000033265&find_code=SYS&local_base=ARS10)
2. [Source](https://bs.sejm.gov.pl/F?func=find-acc&acc_sequence=000011402&find_code=SYS&local_base=ARS10)
3. Integrated Authority File
4. [Source](https://viaf.org/viaf/data/viaf-20230206-links.txt.gz)
5. Auschwitz Prisoners Database
6. Virtual International Authority File
7. Sejm-Wielki.pl