# Oldenburg

> historical federated state

**Wikidata**: [Q19831559](https://www.wikidata.org/wiki/Q19831559)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Oldenburg_(state))  
**Source**: https://4ort.xyz/entity/oldenburg-q19831559


## References

1. [Gesetzblatt für das Herzogthum Oldenburg](https://digital.lb-oldenburg.de/ihd/periodical/pageview/1332566)
2. [Source](https://www.oldenburgische-landschaft.de/wissen/symbole/)
3. National Library of Israel Names and Subjects Authority File