# Joseph Unger
**Wikidata**: [Q53507877](https://www.wikidata.org/wiki/Q53507877)  
**Source**: https://4ort.xyz/entity/joseph-unger-q53507877


## References

1. Integrated Authority File
2. Catalog of the German National Library
3. Virtual International Authority File
4. The Stuttgart Database of Scientific Illustrators 1450–1950
5. CERL Thesaurus