# Christoph Sonntag

> born 1862; died 1919

**Wikidata**: [Q99522884](https://www.wikidata.org/wiki/Q99522884)  
**Source**: https://4ort.xyz/entity/christoph-sonntag-q99522884


## References

1. IdRef
2. Catalog of the German National Library
3. BnF authorities
4. Open Library
5. Faceted Application of Subject Terminology
6. [Source](https://openlibrary.org/authors/OL1242799A/Sonntag_Christoph)