# Joop Siedenburg

> Dutch art dealer (1875-1961)

**Wikidata**: [Q111971651](https://www.wikidata.org/wiki/Q111971651)  
**Source**: https://4ort.xyz/entity/joop-siedenburg


## References

1. [Source](https://www.openarchieven.nl/nha:a15bd983-a14a-4b80-8344-a691c4e2b01f)
2. RKDartists
3. [Source](https://www.stedelijk.nl/nl/collectie/74303-willem-sandberg-breitner-en-amsterdam)
4. Virtual International Authority File
5. [Source](https://www.openarchieven.nl/saa:98533459-90c4-56a3-e053-b784100ade19)