# Jaroslav Ptáček
**Wikidata**: [Q18718696](https://www.wikidata.org/wiki/Q18718696)  
**Source**: https://4ort.xyz/entity/jaroslav-pt-ek-q18718696


## References

1. Czech National Authority Database
2. [Records of persons of interest](http://svazky.cz/test/svazkyMT.php?jmeno=Jaroslav&prijm=Ptacek&dnar=05.04.1928&hledej=Hledat)
3. [The Fine Art Archive](https://cs.isabart.org/person/96137)
4. Virtual International Authority File
5. The Fine Art Archive
6. State Security records
7. Register of registered legal entities maintained by the Ministry of Culture
8. [Source](http://svazky.cz/test/svazkyMT.php?jmeno=Jaroslav&prijm=Ptáček&dnar=05.04.1928&mnar=&archivsvazek=&hledej=Hledat)
9. [Source](http://svazky.cz/test/svazkyMT.php?jmeno=Jaroslav&prijm=Ptacek&dnar=05.04.1928&hledej=Hledat)
10. Bibliography of the History of the Czech Lands