# Portrait of Theo Nieuwenhuis (1866–1951)

> painting by Willem Witsen

**Wikidata**: [Q44437553](https://www.wikidata.org/wiki/Q44437553)  
**Source**: https://4ort.xyz/entity/portrait-of-theo-nieuwenhuis-1866-1951-


## References

1. [Source](http://am.adlibhosting.com/amonline/details/collect/46984)
2. [Source](https://rkd.nl/explore/images/274016)