The Internet Public Library Reference Desk - Online reference sources arranged by subject, answers to frequently asked reference questions, pathfinders for getting started in doing research in a subject area, and Ask a Librarian services.TheLibraryCard - Virtual reference desk of categorized links to web resources.
Dictionary.com/Ask Doctor Dictionary - Free English dictionary and reference guide. Answers questions about words, grammar, and language.
The Düsseldorf Virtual Library - A collection of internet resources of academic and general interest; international and multilingual, with a German focus.
The Virtual Reference Desk - A clearinghouse of information for online Q&A practitioners, as well as a locator service to help users find an appropriate "Ask-A" service. The Virtual Reference Desk aims to link the K-12 education community to experts in many fields.
Smithsonian American Art Museum - Art information specialists at the National Museum of American Art, using print and electronic reference sources, provide assistance with art reference questions at this site.
