I haven't gone through any of these links to see if they are current, but there are tons of links for sites for a number of different indigenous languages. Take a look:

Indigenous Languages
http://www.nativeweb.org/resources/languages_linguistics/indigenous_languages/

Linguistics
http://www.nativeweb.org/resources/languages_linguistics/linguistics/

Native American Languages
http://www.nativeweb.org/resources/languages_linguistics/native_american_languages/