# Otto Sierich
**Wikidata**: [Q89657861](https://www.wikidata.org/wiki/Q89657861)  
**Source**: https://4ort.xyz/entity/otto-sierich


## References

1. [Source](https://ndhadeliver.natlib.govt.nz/delivery/DeliveryManagerServlet?dps_pid=IE33230975)
2. Virtual International Authority File
3. [Source](https://viaf.org/viaf/data/viaf-20230206-links.txt.gz)