# Charles Knowlton

> American physician, atheist, writer and birth control advocate

**Wikidata**: [Q261563](https://www.wikidata.org/wiki/Q261563)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Charles_Knowlton)  
**Source**: https://4ort.xyz/entity/charles-knowlton


## References

1. International Standard Name Identifier
2. SNAC
3. Encyclopædia Britannica Online
4. Freebase Data Dumps. 2013
5. Virtual International Authority File
6. Catalogo of the National Library of India