# Houghton Mifflin Harcourt

> American publisher of textbooks

**Wikidata**: [Q390074](https://www.wikidata.org/wiki/Q390074)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Houghton_Mifflin_Harcourt)  
**Source**: https://4ort.xyz/entity/houghton-mifflin-harcourt


## References

1. archINFORM
2. [Source](https://web.archive.org/web/20250622081923/https://newenglandbooks.org/page/book-awards)
3. Virtual International Authority File
4. Polygon.io
5. ROR release v1.19
6. Freebase Data Dumps. 2013
7. Czech National Authority Database
8. MusicBrainz
9. National Software Reference Library
10. Google Knowledge Graph
11. [Source](http://km.aifb.kit.edu/services/crunchbase/)
12. GRID Release 2015-12-14
13. GRID Release 2016-12-06
14. GRID Release 2017-01-10
15. Quora
16. Aligned ISNI and Ringgold identifiers for institutions
17. [archINFORM](https://www.archinform.net/service/wd_aiarch.php)
18. Microsoft Academic Knowledge Graph
19. National Library of Israel Names and Subjects Authority File
20. [OpenAlex](https://docs.openalex.org/download-snapshot/snapshot-data-format)
21. Wikirate