# Contra Costa County Library

> public library system in Contra Costa County, California, United States

**Wikidata**: [Q5165604](https://www.wikidata.org/wiki/Q5165604)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Contra_Costa_County_Library)  
**Source**: https://4ort.xyz/entity/contra-costa-county-library


## References

1. [US Public Library System Data File, FY 2020](https://www.imls.gov/research-evaluation/data-collection/public-libraries-survey)
2. [Source](https://www.urbanlibraries.org/about/library-members)
3. [California Public Library Directory](https://www.library.ca.gov/services/to-libraries/library-directory/)
4. US Public Library System Data File, FY 2016
5. US Public Library System Data File, FY 2015
6. [Source](https://ccclib.org/)
7. Aligned ISNI and Ringgold identifiers for institutions
8. YouTube API
9. Microsoft Academic Knowledge Graph