# Ernst W. Puttkammer

> American jurist (1891-1978)

**Wikidata**: [Q111647305](https://www.wikidata.org/wiki/Q111647305)  
**Source**: https://4ort.xyz/entity/ernst-w-puttkammer


## References

1. [Source](https://postalmuseum.si.edu/people/ernst-w-puttkammer)
2. OPAC SBN
3. NUKAT
4. Virtual International Authority File
5. CiNii Research
6. Library of Congress Authorities
7. Catalogo of the National Library of India