Online Encyclopedias and tutoring services 

Encyclopedia Britannica Academic Edition

Online encyclopedia for use in academic libraries

Encyclopedia Britannica Public Library Edition

Online encyclopedia for use in public libraries

Encyclopedia Britannica School Edition

Online encyclopedia for middle and high school students

Encyclopedia Smithsonian

Just like the Smithsonian Institution itself, this resource has everything. Provides bibliographies, curriculum ideas, and information on a wide range of topics.

Library of Congress: Portals to the World

Links to electronic resources from around the world. Organized alphabetically by country