# Erwin D. Treadwell

> American mineral surveyor

**Wikidata**: [Q137770310](https://www.wikidata.org/wiki/Q137770310)  
**Source**: https://4ort.xyz/entity/erwin-d-treadwell


## References

1. [Portrait and Biographical Record of Arizona](https://archive.org/details/portraitandbiogr00chap/page/234/mode/2up)
2. [Find a Grave](https://www.findagrave.com/memorial/226300825/erwin_davis-treadwell)