# Karl Haffner

> German actor and librettist (1804-1876)

**Wikidata**: [Q106121](https://www.wikidata.org/wiki/Q106121)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Karl_Haffner)  
**Source**: https://4ort.xyz/entity/karl-haffner


## References

1. Integrated Authority File
2. BnF authorities
3. datos.bne.es
4. Library of the World's Best Literature
5. Open Library
6. Virtual International Authority File
7. CiNii Research
8. MusicBrainz
9. International Music Score Library Project
10. filmportal.de
11. [Source](https://www.bartleby.com/library/bios/index3.html)
12. CERL Thesaurus
13. LIBRIS. 2012
14. National Library of Israel Names and Subjects Authority File
15. [Source](http://www.musiklexikon.ac.at/ml/ml-beacon.txt)