Ioway-Otoe-Missouria Language  
   Jimm G. Good Tracks' descriptions and bibliography of research and fieldwork into the native language of the Ioway and Otoe of Kansas and Oklahoma.
   http://spot.colorado.edu/~koontz/tracks/jgtiombib.htm

Passing of Elders  
   A tribute to Truman W. Dailey, the "last fluent speaker" of the Otoe-Missouria language, who passed away on December 16, 1996, at the age of 98.
   http://www.dickshovel.com/elders.html#Truman

The Siouan Languages Bibliography  
   Searchable bibliography project aiming to collect all the linguistic and language related work done on the Siouan-Catawban languages.
   http://puffin.creighton.edu/lakota/siouan_language.html