The complete Encyclopaedia Britannica on the web. Advertising supports this free site.
Entries are short, but include links to other articles as well as links to related web sites.
Each entry also includes links to the fee-based Electric Library. At the moment it is free, but you need to obtain a password. Topics covered include armed forces history, anthropology, mineral sciences, physical sciences and transportation history. Can search all the references simultaneously, or browse the almanacs by clicking on topics. Prepared by the Central Intelligence Agency for the use of US Government officials, it has comprehensive and up to date country profiles.