# Mark Jefferson

> American geographer (1863–1949)

**Wikidata**: [Q4160235](https://www.wikidata.org/wiki/Q4160235)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Mark_Jefferson_(geographer))  
**Source**: https://4ort.xyz/entity/mark-jefferson


## References

1. International Standard Name Identifier
2. [Source](https://viaf.org/viaf/data/viaf-20230206-links.txt.gz)
3. Faceted Application of Subject Terminology
4. Virtual International Authority File
5. Open Library
6. SNAC
7. National Archives Identifier
8. Photographers' Identities Catalog
9. Jefferson, Mark Sylvester William (1863-1949), geographer