# Mathias Koenen

> German engineer (1849–1924)

**Wikidata**: [Q1908499](https://www.wikidata.org/wiki/Q1908499)  
**Source**: https://4ort.xyz/entity/mathias-koenen


## References

1. Neue Deutsche Biographie
2. Integrated Authority File
3. Virtual International Authority File
4. [Source](https://www.deutsche-biographie.de/sfz43755.html)
5. Structurae