Sioux/Lakota/Western Dakota/Eastern Dakota Languages
Lakota Language Lesson: St. Joseph's Indian School
From the website: Lakota youth at St. Joseph's Indian School learn their Native language and traditions. Sharing these lessons and our cultural resources around the globe helps preserve the Lakota (Sioux) culture and give Native American youth hope for a bright future.
Akta Lakota Museum and Cultural Centre
Lakota language resources.
Lahcotah: Dictionary of the Sioux Language
Free online PDF of a dictionary originally published in 1866.