# Otto Bierhals

> German painter, watercolorist, and draftsman

**Wikidata**: [Q97016486](https://www.wikidata.org/wiki/Q97016486)  
**Source**: https://4ort.xyz/entity/otto-bierhals


## References

1. RKDartists
2. Benezit Dictionary of Artists
3. Artists of the World Online
4. Frick Art Research Library Photoarchive
5. Invaluable