# Library of Congress Control Number

> numbering system for catalog records at the Library of Congress (not a subject classification)

**Wikidata**: [Q620946](https://www.wikidata.org/wiki/Q620946)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Library_of_Congress_Control_Number)  
**Source**: https://4ort.xyz/entity/library-of-congress-control-number


## References

1. [Source](http://www.loc.gov/marc/lccn_structure.html)
2. Freebase Data Dumps. 2013
3. [Source](https://lccn.loc.gov/#n1)
4. [Source](https://lccn.loc.gov/#n7)
5. [Source](http://viaf.org/viaf/partnerpages/LC.html)
6. BabelNet
7. Datahub