Online Dictionaires

OneLook

Your Dictionary.Com

Rhyme Zone

Reference Library Yahoo Kids [Dictionary and Encyclopedia]

Hyperdictionary

Merriam-Webster

Write Express Online Rhyming Dictionary

Synonym Dictionary

The Free Dictionary

Encyclopedias

Grolier Online

Wikipedia

Atlases

Atlapedia Online

Map Machines from National Geographic

Map Quest

Almanacs

Fact Monster

Infoplease

Guinness Book of World Records

Founding Fathers Almanac

Databases

Electronic Library

NPS Middle School Reference Resources

NetTrekker

Directories

U.S. Postal Service

Your Switchboard Directory

Say Hello to the World

Primary and Secondary Resources

The Learning Page - Primary Source Set - Thanksgiving

Prints & Photographs Reading Room [Library of Congress]

How to Find Primary Sources

Defining Primary and Secondary Sources