# Ervaco
**Wikidata**: [Q10488487](https://www.wikidata.org/wiki/Q10488487)  
**Source**: https://4ort.xyz/entity/ervaco


## References

1. [Source](http://collecties.stadsarchief.rotterdam.nl/publiek/detail.aspx?xmldescid=51971)
2. [Source](https://collectie.verzetsmuseum.org/ais6/Details/collect/2716)