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Note: Your favorite library probably has access to Ex Libris Primo or a similar system.



General Reference, Foundations


Portal, Dictionary, Thesaurus, Glossary, Encyclopedia, Introduction, Outline, Search


Locating Fair and Balanced Sources (Internet Public Library)

These are organized by a classification scheme developed exclusively for Cosma. More…



Library of Congress Research and Reference Services
Library of Congress Reference Shelf
Library of Congress Alcove 9: An Annotated List of Reference Websites

Refdesk Reference Shelves on the Net
Refdesk Essential Reference Tools
Refdesk Quick Reference
Refdesk Indispensable Links

Wolfram Alpha

Project Gutenberg

Wikipedia’s Reference Desk
Wikipedia’s Reference Works Category
Wikipedia’s General Reference Portal


reference : something (as a sign or indication) that refers a reader or consulter to another source of information (as a book or passage) — Webster See also OneLook, Free Dictionary, Wiktionary


Roget’s II (, Merriam-Webster Thesaurus, Visuwords


Reference work A reference work is a compendium of information, usually of a specific type, compiled in a book for ease of reference.Reference work. — Wikipedia

Ready reference are reference materials used in answering reference questions that can be answered by a reference librarian in one or two minutes by providing a fact or piece of information found in a single source shelved for convenience in a separate location near the reference desk rather than in the reference stacks Reference work. — Online Dictionary for Library and Information Science



WorldCat, Library of Congress, UPenn Online Books, Open Library



Great Sites for Kids (ALA)


OER Commons: Open Educational Resources


Reference Librarian (US Occupational Outlook Handbook)


General Reference Works (David Nordloh, American Literary Scholarship)
Google Scholar




Library of Congress Research and Reference Services
Library of Congress Reference Shelf
Library of Congress Alcove 9: An Annotated List of Reference Websites




Reference Librarianship in Star Wars
Jedi Master ‘Madame’ Jocasta Nu



Latest News - Recent Updates Latest News - Recent Updates

  • Latest News: Crime Classics Series Debuts
    on April 7, 2020 at 2:23 pm

    Poisoned Pen Press, the mystery imprint of leading independent publisher Sourcebooks, worked closely with the National Library Service (NLS) for the Blind and Print Disabled at the Library of Congress to ensure a simultaneous print and braille release of “That Affair Next Door” by Anna Katharine Green, the debut title in the new Library of Congress Crime Classics series. “The collaboration between Poisoned Pen Press, the Library of Congress’ Publishing Office and NLS […]

  • NEWS: Dav Pilkey to Provide Stay-at-Home Videos
    on March 30, 2020 at 2:24 pm

    Dav Pilkey, the children’s author and illustrator behind award-winning and worldwide bestselling book series including Dog Man and Captain Underpants, is collaborating with the Library of Congress to serve children and families online during the coronavirus pandemic. "Dav Pilkey at Home" will feature new video content created by Pilkey himself on Friday mornings at 8 a.m. ET on social media channels and the websites of the Library and Scholastic, the global children’s publishing, […]

  • NEWS: Library Buildings Closed Until Further...
    on March 26, 2020 at 9:39 pm

    Out of an abundance of caution, all Library of Congress buildings and facilities will be closed to the public, including researchers and others with reader identification cards, until further notice to reduce the risk of transmitting COVID-19 coronavirus. The Library has reduced the number of people in Library buildings to a very small number of necessary individuals. Click here for more information.

  • Latest News: National Recording Registry Announced
    on March 25, 2020 at 11:00 am

    The gentle sounds of “Mister Rogers’ Neighborhood,” Russ Hodges’ thrilling play-by-play of the National League tiebreaker between the New York Giants and the Brooklyn Dodgers in 1951, the Village People’s international dance anthem, “Y.M.C.A.,” “Cheap Trick at Budokan” and the original 1964 Broadway cast recording of “Fiddler on the Roof” are among the newest recordings inducted into the National Recording Registry of the Library […]

  • NEWS: Library of Congress Cancels Events Until...
    on March 17, 2020 at 5:14 pm

    The Library of Congress announced today that all public events at the Library are canceled until May 11 to reduce the risk of transmitting COVID-19 coronavirus. Whenever possible, the Library will reschedule the public programs that have been canceled. We will also provide regular public updates on the operating status of Library facilities. Library of Congress buildings and facilities remain closed to the public until Wednesday, April 1, 2020 at 8 a.m. Click here for more information.