# Walter Penney

> American mathematician and cryptanalyst

**Wikidata**: [Q105517204](https://www.wikidata.org/wiki/Q105517204)  
**Source**: https://4ort.xyz/entity/walter-penney


## References

1. [Source](https://gw.geneanet.org/herediasittig?lang=en&n=penney&oc=0&p=walter+francis)
2. [Source](https://archive.org/details/GNR2000062901/page/4/mode/2up)
3. [Source](https://fas.org/irp/nsa/2000-09.pdf)