# John E. Ecklund
**Wikidata**: [Q125357511](https://www.wikidata.org/wiki/Q125357511)  
**Source**: https://4ort.xyz/entity/john-e-ecklund


## References

1. Catalogue of the Library of the Pontifical University of the Holy Cross
2. Catalog of the German National Library
3. National Library of Israel Names and Subjects Authority File
4. Archives at Yale
5. Parsifal catalog
6. Virtual International Authority File