# Karl Mattern

> American painter (1892–1969)

**Wikidata**: [Q56025063](https://www.wikidata.org/wiki/Q56025063)  
**Source**: https://4ort.xyz/entity/karl-mattern


## References

1. Union List of Artist Names. 2017
2. Artnet
3. Invaluable
4. [Source](http://art.nelson-atkins.org/people/6979)
5. mutualart.com
6. ARTIC
7. Frick Art Research Library Photoarchive
8. [Source](http://www.artnet.com/artists/karl-mattern)