# John Butler Johnson

> American civil engineer and educator (1850–1902)

**Wikidata**: [Q63159413](https://www.wikidata.org/wiki/Q63159413)  
**Source**: https://4ort.xyz/entity/john-butler-johnson


## References

1. [Source](https://books.google.com/books?id=lOc1AQAAMAAJ&pg=PA31)
2. [Source](https://viaf.org/viaf/data/viaf-20230206-links.txt.gz)
3. Grace's Guide
4. Faceted Application of Subject Terminology
5. Trove
6. Catalogo of the National Library of India