# John Casper Heck
**Wikidata**: [Q72937331](https://www.wikidata.org/wiki/Q72937331)  
**Source**: https://4ort.xyz/entity/john-casper-heck


## References

1. Catalog of the German National Library
2. Virtual International Authority File
3. BnF authorities
4. International Music Score Library Project
5. Bach digital