# Otto Mittler

> Swiss regional historian and author (1890-1970)

**Wikidata**: [Q2039992](https://www.wikidata.org/wiki/Q2039992)  
**Source**: https://4ort.xyz/entity/otto-mittler


## References

1. Integrated Authority File
2. Aargauer Bibliografie
3. Historical Dictionary of Switzerland
4. [Source](https://www.portraitarchiv.ch/portrait/show/237881)