Bookwire
   Descriptive listing of US libraries alphabetically and by state, as well as an index of Asian, European, Canadian and special libraries.
   http://www.bookwire.com/bookwire/libraries/libraries.html

Canadian Directory of Special Collections
   Directory for these types of libraries in Canada. Contains the description and history of each collection.
   http://www.collectionscanada.ca/collectionsp/index-e.html

Global Reach
   Searchable database which shows the involvement of librarians and libraries in international library activities.
   https://cs.ala.org/global/

ISBNDB
   Multilingual database of international standard book numbers. Offers the possibility to investigate by category.
   http://isbndb.com/

Internet Quick Reference Shelf: Library Resources
   Collection of links presented by the University of Indiana categorized by topics.
   http://www.indiana.edu/~librcsd/internet/Library_Resources/

Law Libraries Worldwide
   Chan Robles & Associates provides links to major law libraries around the world.
   http://www.chanrobles.com/lawlib1.htm

Lib Web Cats
   Searchable database of over 5,000 library sites worldwide. Listings include mailing addresses and links to online catalogs.
   http://www.librarytechnology.org/libwebcats/

LibDex
   World index of library sites with over 18,000 database entries. Includes a list of libraries by catalog vendor.
   http://www.libdex.com/

Libraries and Archives
   Index of links to universities and libraries worldwide as well as references to various directories.
   http://www.uky.edu/Subject/libraries.html

Libraries of the World and their Catalogues
   Links to national, academic and public libraries and their catalogues. Compiled by Sylvia Milne, a retired librarian.
   http://www.sylviamilne.co.uk/libcats.htm

Libraries411.com
   Searchable directory and maps for over 20,000 US and Canadian public libraries.
   http://www.libraries411.com

Library and Information Science
   IFLA list of world wide web accessible libraries worldwide sorted by countries.
   http://www.ifla.org/II/natlibs.htm

Library and Related Resources
   List of references indexed by topics like public, school and national libraries. Also includes sections about organisations and science resources.
   http://www.ex.ac.uk/library/wwwlibs.html

Libweb
   Searchable and categorized links to over 7,000 pages from libraries in over 100 countries, including academic, public and national libraries worldwide; library organizations and consortia; and related sites.
   http://lists.webjunction.org/libweb/

Lii.org: Librarianship
   Point of access for librarian-selected internet resources worldwide asorted by topics.
   http://lii.org/search/file/libraries

NLS/BPH: Reference Directories Index Page
   A list of directories provided by the U.S. Library of Congress, National Library Service for the Blind and Physically Handicapped.
   http://www.loc.gov/nls/reference/directories/

National Library Catalogues Worldwide
   Index of libraries with detailed descriptions about the handling of the search interfaces sorted by countries.
   http://www.library.uq.edu.au/ssah/jeast/

Philadelphia Area Consortium of Special Collections Libraries
   Includes links to member libraries, online exhibits, and catalogs.
   http://www.pacscl.org/

School Libraries on the Web
   Worldwide directory of school library sites. The US categories also list related library organizations.
   http://www.sldirectory.com/

Switzerland's Directory of Archives and Databases
   Information on contents, location, contact, online catalogues, and the conditions of use of hundreds of databases, archives and libraries in Switzerland.
   http://www.swissinfo.org/sen/swissinfo.html?siteSect=821&cat=20

The WWW Library Directory
   Searchable directory of over 8,000 library and library-related sites worldwide arranged by countries. Includes a US section sorted by states.
   http://www.webpan.com/msauers/libdir/