# Esper S. Larsen, Jr.

> American mineralogist (1879-1961)

**Wikidata**: [Q1262111](https://www.wikidata.org/wiki/Q1262111)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Esper_Signius_Larsen)  
**Source**: https://4ort.xyz/entity/esper-s-larsen-jr-


## References

1. Mindat.org
2. Mineralogical Society of America
3. [Source](http://www.geosociety.org/awards/past.htm#penrose)
4. Virtual International Authority File
5. IdRef
6. National Library of Israel Names and Subjects Authority File
7. Catalogo of the National Library of India