# W.Ph. Coolhaas

> Dutch historian (1899-1981)

**Wikidata**: [Q15883637](https://www.wikidata.org/wiki/Q15883637)  
**Source**: https://4ort.xyz/entity/w-ph-coolhaas


## References

1. Catalogus Professorum Academiae Rheno-Traiectinae
2. [Source](https://resolver.kb.nl/resolve?urn=MMKB06:000001732:pdf)
3. [Nationaal Archief](https://www.nationaalarchief.nl/onderzoeken/archief/4.COP)
4. [Source](https://www.nationaalarchief.nl/onderzoeken/index/nt00454/f8c369ae-cbd9-11e8-828a-00505693001d)
5. general catalog of BnF
6. Virtual International Authority File
7. BnF authorities
8. CiNii Research
9. [Nationaal Archief](https://www.nationaalarchief.nl/onderzoeken/archief/2.21.225)
10. Biografisch Portaal
11. Source
12. National Library of Israel Names and Subjects Authority File
13. Catalogo of the National Library of India