# Joseph Gregor

> Austrian writer, theatre historian and librettist (1888-1960)

**Wikidata**: [Q112233](https://www.wikidata.org/wiki/Q112233)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Joseph_Gregor)  
**Source**: https://4ort.xyz/entity/joseph-gregor


## References

1. Archivio Storico Ricordi
2. Literatur in Österreich 1938-1945, Band 4: Wien
3. Integrated Authority File
4. BnF authorities
5. International Standard Name Identifier
6. Virtual International Authority File
7. CiNii Research
8. MusicBrainz
9. [Source](https://kalliope-verbund.info/DE-611-BF-11713)
10. SNAC
11. International Music Score Library Project
12. Brockhaus Enzyklopädie
13. Proleksis Encyclopedia
14. Freebase Data Dumps. 2013
15. CONOR.SI
16. Autoritats UB
17. performing-arts.ch