# National Union Catalog

> printed catalog of books catalogued by the Library of Congress and other American and Canadian libraries

**Wikidata**: [Q3336951](https://www.wikidata.org/wiki/Q3336951)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/National_Union_Catalog)  
**Source**: https://4ort.xyz/entity/national-union-catalog