# Sigfrid Wallengren
**Wikidata**: [Q6230666](https://www.wikidata.org/wiki/Q6230666)  
**Source**: https://4ort.xyz/entity/sigfrid-wallengren


## References

1. Virtual International Authority File
2. [Source](https://runeberg.org/vemardet/1918/0407.html)
3. [Source](https://runeberg.org/vemardet/1925/0795.html)
4. [Source](https://runeberg.org/vemvardet/0199.html)
5. LIBRIS. 2018