# Stephen D. Ludington

> Geologist Emeritus

**Wikidata**: [Q57782861](https://www.wikidata.org/wiki/Q57782861)  
**Source**: https://4ort.xyz/entity/stephen-d-ludington


## References

1. Virtual International Authority File
2. [Source](https://www.usgs.gov/staff-profiles/steve-ludington?qt-staff_profile_science_products=3#qt-staff_profile_science_products)
3. [Source](https://orcid.org/0000-0002-6265-4996)
4. [ORCID Public Data File 2023](https://pub.orcid.org/v3.0/0000-0002-6265-4996/employment/2956469)
5. [Source](https://data.dnb.de/opendata/authorities-gnd-person_lds.rdf.gz)