# Sigmund W. Leifson

> American physicist

**Wikidata**: [Q56027858](https://www.wikidata.org/wiki/Q56027858)  
**Source**: https://4ort.xyz/entity/sigmund-w-leifson


## References

1. General Catalog 1963 - 1964
2. General Catalog 1940-1941
3. [Source](https://viaf.org/viaf/data/viaf-20230206-links.txt.gz)
4. Library of Congress Authorities
5. Virtual International Authority File