# Ferdinand Helfreich Frisch
**Wikidata**: [Q53500853](https://www.wikidata.org/wiki/Q53500853)  
**Source**: https://4ort.xyz/entity/ferdinand-helfreich-frisch


## References

1. Czech National Authority Database
2. Frisch, Johann Leonhard
3. The Stuttgart Database of Scientific Illustrators 1450–1950
4. CERL Thesaurus
5. Benezit Dictionary of Artists
6. NUKAT
7. Virtual International Authority File