# watermark

> faint image or device in paper that appears as various shades of lightness/darkness when viewed by transmitted light

**Wikidata**: [Q43065](https://www.wikidata.org/wiki/Q43065)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Watermark)  
**Source**: https://4ort.xyz/entity/watermark


## References

1. [Source](https://github.com/JohnMarkOckerbloom/ftl/blob/master/data/wikimap)
2. Art & Architecture Thesaurus
3. Freebase Data Dumps. 2013
4. [Source](http://datos.bne.es/tema/XX527423.html)
5. YSO-Wikidata mapping project
6. FactGrid
7. National Library of Israel
8. GF WordNet
9. [Bibliography of the History of the Czech Lands](https://biblio.hiu.cas.cz/records/4600040b-2be9-4182-a165-7cb32636e250)
10. Wikibase TDKIV