# Portrait of the Author Gunnar Heiberg

> painting by Hans Heyerdahl

**Wikidata**: [Q55420101](https://www.wikidata.org/wiki/Q55420101)  
**Source**: https://4ort.xyz/entity/portrait-of-the-author-gunnar-heiberg


## References

1. [Source](http://samling.nasjonalmuseet.no/en/object/NG.M.00742)
2. [Source](https://www.nasjonalmuseet.no//en/collection/object/NG.M.00742)