# Johann Birnbaum
**Wikidata**: [Q28944064](https://www.wikidata.org/wiki/Q28944064)  
**Source**: https://4ort.xyz/entity/johann-birnbaum-q28944064


## References

1. Czech National Authority Database
2. The Fine Art Archive
3. Biographical Dictionary of the History of the Czech Lands
4. CERL Thesaurus
5. Artists of the World Online