# John Henry Otto
**Wikidata**: [Q109857060](https://www.wikidata.org/wiki/Q109857060)  
**Source**: https://4ort.xyz/entity/john-henry-otto


## References

1. Open Library
2. Faceted Application of Subject Terminology
3. CERL Thesaurus
4. [Source](http://thesaurus.cerl.org/record/cnp00688905)
5. National Library of Israel Names and Subjects Authority File