# Friedrich R. Blau
**Wikidata**: [Q55680913](https://www.wikidata.org/wiki/Q55680913)  
**Source**: https://4ort.xyz/entity/friedrich-r-blau


## References

1. Integrated Authority File
2. [online catalogue of Huis van het boek. 1900](https://mmm-web.adlibhosting.com/AIS6/Details/collect/7513311)
3. RKDartists