# Siegfried Friedrich
**Wikidata**: [Q95276952](https://www.wikidata.org/wiki/Q95276952)  
**Source**: https://4ort.xyz/entity/siegfried-friedrich


## References

1. Catalog of the German National Library
2. Czech National Authority Database
3. [Source](http://www.musiklexikon.ac.at/ml/ml-beacon.txt)