The Legislature finds that the Lakota, Nakota, and Dakota dialects of the Sioux language are "historically" unwritten languages and are defined as such by the provisions of Public Law 94-73. Source: SL 1976, ch 104 , § 2.
Sioux dialects defined as historically unwritten
SDCL § 12-3-9 — under SUFFRAGE AND RIGHT TO VOTE.
SDCL § 12-3-9