# H. Zylstra
**Wikidata**: [Q65588797](https://www.wikidata.org/wiki/Q65588797)  
**Source**: https://4ort.xyz/entity/h-zylstra


## References

1. [Source](https://archives.calvin.edu/?p=creators/creator&id=85)
2. [Source](https://viaf.org/viaf/data/viaf-20230206-links.txt.gz)
3. [Source](https://www.geheugenvandevu.nl/download_file/539/498)
4. National Library of Israel Names and Subjects Authority File