# Helmer Nygren

> Swedish opera singer

**Wikidata**: [Q24681335](https://www.wikidata.org/wiki/Q24681335)  
**Source**: https://4ort.xyz/entity/helmer-nygren


## References

1. [Musikverkets auktoritetsdatabas. 2017](http://calmview.musikverk.se/CalmView/Record.aspx?src=CalmView.Persons&id=DS/UK/1375)
2. [Svenskagravar.se](http://www.svenskagravar.se/gravsatt/45654876)
3. [norrabegravningsplatsen.se](http://norrabegravningsplatsen.se/sten-nr-628-helmer-nygren/)
4. [Svenskagravar.se](https://www.svenskagravar.se/search?ShowFilters=False&Query=Nygren%2C+Karl+Olof+Helmer&ParishId=&GraveNumber=&BirthDate=&DeathDate=&BurialDate=&OrderByDesc=False&OrderBy=)