Encyclopedia Britannica Online School Edition Choose between three different levels of encyclopedias.
Grolier Online: Use a variety of general and subject encyclopedias, including Encyclopedia Americana, New Book of Knowledge, New Book of Popular Science, and Lands and Peoples. This source even includes a Spanish-language encyclopedia, Nueva Enciclopedia Cumbre en Linea.
World Book: A general encyclopedia source with many articles to help you with your research. World Book also includes a Spanish-language encyclopedia.