# Joh. Baptist Hafen
**Wikidata**: [Q55136100](https://www.wikidata.org/wiki/Q55136100)  
**Source**: https://4ort.xyz/entity/joh-baptist-hafen


## References

1. Integrated Authority File
2. Czech National Authority Database
3. Catalog of the German National Library
4. [Source](https://www.deutsche-biographie.de/sfz25220.html)
5. Virtual International Authority File