Union Catalogs

Find what you want in a library near you with WorldCat, a global catalog of library collections. If you find what you are looking for at a library outside of your own, talk to your librarian about how to obtain the item. Options such as InterLibrary Loan (ILL) may be available.

Open Library is an open, editable library catalog, building towards a web page for every book ever published. Read, borrow, and discover more than 3M books for free.

Through the NARA website, users may search the Presidential Libraries section of our website: (1) Check the box next to the library or libraries you wish to search; (2) Enter search terms in the box, below.

You can search the standard bibliographic database of the Arabic Union Catalog and the content of the Arabic union digital library...

Search German and other European libraries. May include some institutions not found in WorldCat. Der Karlsruher Virtuelle Katalog ist ein Dienst der KIT-Bibliothek zum Nachweis von mehr als 500 Millionen Büchern und Zeitschriften in Bibliotheks- und Buchhandelskatalogen weltweit

Searching the catalog requires no log-in credentials, however access to the physical locations varies based on individual library policies. Items or chapter/article scans may often be requested through the consortium (if user is located at a partner library) or via InterLibrary Loan (ILL). Ask your local librarian about options. This Washington D.C.-based consortium is made up of nine academic libraries: American University, Washington, D.C.; Gallaudet University; University of America; George Mason University (GMU); George Washington University (GWU); Georgetown University; Howard University; Marymount University; University of the District of Columbia (UDC). The consortium catalog is searchable without logging in, however researchers are prompted to select a university before searching.

The Rijksmuseum and other participants in artlibraries.net sought a more advanced and future-looking system to give single-search access to the world’s most important art library catalogs. The Future of Art Bibliography group established the Art Discovery Group Catalogue on WorldCat because of its ability to pull results from participating libraries as well as other freely available databases faster than any other system.