# Hugo Sontag

> German photographer, inventor and patent holder

**Wikidata**: [Q73422794](https://www.wikidata.org/wiki/Q73422794)  
**Source**: https://4ort.xyz/entity/hugo-sontag


## References

1. [Source](https://www.europese-bibliotheek.nl/de/Bucher/Boppard_in_alten_Ansichten_Band_1/100-120590/Artikel)
2. [address book](https://zs.thulb.uni-jena.de/rsc/viewer/jportal_derivate_00241166/ADR_Erfurt_166934437_1924_0437.tif?logicalDiv=log_4a78d662-80f5-41a8-81bb-fe67dae85c1d)
3. [address book](https://zs.thulb.uni-jena.de/rsc/viewer/jportal_derivate_00245409/ADR_Erfurt_166934445_1928_71_1_0718.tif)
4. [address book](https://zs.thulb.uni-jena.de/rsc/viewer/jportal_derivate_00239123/ADR_Erfurt_167824147_1888_0339.tif)