Ethnologue, "an encyclopedic reference work cataloging all of the world’s 6,912 known living languages"
Eurolang, "a specialist niche news agency covering topics related to lesser-used languages, linguistic diversity and national minorities within the European Union"
Wikipedia, "the free encyclopedia"
The Foundation for Endangered Languages
CIA World Fact Book, a fantastic resource on countries of the world
Worlds of Difference, a radio documentary project on endangered languages
Narody Rossii (Nations of Russia -- this site is in Russian)
Minority languages in Russia (parts of this site are in Russian)
Languages on the Web, a site with thousands of language-related links
Center for Applied Linguistics Database
Census map of the distribution of languages in the US
European Bureau for Lesser-Used Languages
European Charter for Regional or Minority Languages
Languages of the European Union
Map of Autonomous Areas in Russia
Do US Attitudes toward Languages need a tune-up?
K. David Harrison's site on Siberian languages
Vermont Mountain Speech (link supplied by Daniel Tifft)
Two articles by Aija Priedite concerning Russians in Latvia: Article 1 and Article 2
Charles Kurzman's article on Uzbekistan
Centre for Applied Language and Literacy Research (relates to Australian indigenous languages and peoples).
Project Gutenberg, with free books in many languages