# John Calvin Metcalf
**Wikidata**: [Q52155815](https://www.wikidata.org/wiki/Q52155815)  
**Source**: https://4ort.xyz/entity/john-calvin-metcalf


## References

1. Faceted Application of Subject Terminology
2. Project Gutenberg
3. Virtual International Authority File
4. National Library of Israel Names and Subjects Authority File