# Heinrich Jonas Ostertag
**Wikidata**: [Q107031754](https://www.wikidata.org/wiki/Q107031754)  
**Source**: https://4ort.xyz/entity/heinrich-jonas-ostertag


## References

1. CERL Thesaurus
2. Union List of Artist Names
3. RKDartists
4. Czech National Authority Database
5. datos.bne.es
6. British Museum person-institution thesaurus
7. National Gallery of Art - Collection
8. AGORHA
9. Artnet
10. Web umenia
11. Invaluable
12. [Source](https://collections.vam.ac.uk/name/wd/AUTH318606/)
13. [Source](http://mak.bn.org.pl/cgi-bin/KHW/makwww.exe?BM=1&NU=1&IM=4&WI=9810948199405606)
14. VcBA (identifier)
15. HMML Authority File