# Henri Heertje

> Dutch sociographist and Holocaust victim (1913–2025)

**Wikidata**: [Q137606191](https://www.wikidata.org/wiki/Q137606191)  
**Source**: https://4ort.xyz/entity/henri-heertje


## References

1. [Source](https://www.openarchieven.nl/saa:98533454-bf4c-56a3-e053-b784100ade19)
2. [KB, nationale bibliotheek](https://www.openarchieven.nl/kbd:76e37266-d7f6-6397-25b2-2f105a99bbf1)
3. [Nationaal Archief](https://www.openarchieven.nl/ghn:606caec2-a136-11e8-828a-00505693001d)
4. [North Holland Archives](https://www.openarchieven.nl/nha:F42065C6-64C8-4BAD-8666-B9A5B839F4AD)
5. [Stadsarchief Amsterdam](https://www.openarchieven.nl/saa:98533454-bf4c-56a3-e053-b784100ade19)
6. Holocaust persons database