# Willem Kapteijn
**Wikidata**: [Q107551765](https://www.wikidata.org/wiki/Q107551765)  
**Source**: https://4ort.xyz/entity/willem-kapteijn


## References

1. [Source](https://hdl.handle.net/21.12123/3334)
2. [Source](https://www.openarchieven.nl/ghn:1a848275-7402-42ee-a9fe-1c4a1f5afae7/nl)
3. [Source](https://www.openarchieven.nl/gld:630ADF4C-C596-4A20-BCBE-DBD8737DBC15)
4. [Source](http://beeldbankwo2.nl/nl/beelden/detail/d95d8eea-025a-11e7-904b-d89d6717b464/media/f207140d-8d08-6cab-b81e-31069170eb12)
5. collection website Museon-Omniversum