South Dakota began registering births on 1 Jul 1905. Most of the South Dakota Births Over 100 Years Old were filed when the "baby" applied for Social Security (1930s-1940s) and submitted proof of birth for a delayed birth certificate. (Look at the Date of Filing.)

Ancestry has in the South Dakota Deaths, 1905-1955, has a death for Ernest H. MULLER, d:2 Aug 1910, dp:Beadle Co., South Dakota