# Willem Valter
**Wikidata**: [Q133870874](https://www.wikidata.org/wiki/Q133870874)  
**Source**: https://4ort.xyz/entity/willem-valter


## References

1. [Source](https://www.napoleon-series.org/research/biographies/Holland/Engineers/Officers/c_DutchEngineerOfficers.html)
2. Repertorium van Nederlandse kaartmakers
3. [1996](https://caert-thresoor.nl/wp-content/uploads/sites/4/CT15-2.pdf)