So I'm reading this and are going to try post updates. Racist Lang. below
Apparently Anna, Illinois (a town) stands fr "Ain't No Niggers Allowed"
Sundown Towns - white only towns (usually no African Americans but also in some places no Chinese or Hispanics, Jews).
Racial relations improved after the Civil War, but worsened from 1890s - 1930s. ( this is also borne out by the book The Great New Orleans Kidnapping Case by Micahel A Ross).
1890s-1930s - Nadir of Race relations, term coined by Rayford Logan
1901-1929 (1973 for South) - Congress totally white. After the Civil War there were African American men elected until 1901.
South had/has fewer Sundown towns - Lowen contends that this is due to wanting African Americans to do the dirty work - such as housekeeping.