# Johan Lammen

> Dutch opera singer, 1901–1943

**Wikidata**: [Q123503531](https://www.wikidata.org/wiki/Q123503531)  
**Source**: https://4ort.xyz/entity/johan-lammen


## References

1. [Stadsarchief Amsterdam](https://www.openarchieven.nl/saa:de698007-e678-4df7-b844-57bcbdba7f3c)
2. [Source](https://www.delpher.nl/nl/kranten/view?coll=ddd&identifier=KBNRC01:000043028:mpeg21:a0020)
3. [Algemeen Handelsblad](https://www.delpher.nl/nl/kranten/view?coll=ddd&identifier=KBNRC01:000043028:mpeg21:a0020)
4. [TheaterEncyclopedie](https://theaterencyclopedie.nl/wiki/Johan_Lammen)
5. [Source](https://theaterencyclopedie.nl/wiki/Johan_Lammen)