Black Freedom Struggle in the United States:

Mississippi in 1875. Vol. 1

Congressional Hearings: June 9, 10, 12, 13, 15-17, 19-24, hearings were held in Jackson, Miss; June 26, 27 hearings were held in Aberdeen, Miss. Hearing was issued as S. Rpt. 44-527, 1876

The Ku-Klux Act.

News article: On the Ku Klux Act / Civil Rights Act of 1871, 1874

Affairs in Insurrectionary States. Part 7: Georgia, Vol. 2

Congressional Hearings: This is a 13-volume collection of reports and testimonies from a Congressional committee that investigated the Ku Klux Klan and other insurrectionary movements in the former Confederacy after the close of the Civil War. The committee made their report in 1872. The report proper is in the first volume; the other volumes contain testimonies and miscellaneous documents., 1871

41 S. 503 (Introduced in Senate)

A bill extending the provisions of the civil rights bill for the enforcement of the fifteenth amendment of the Constitution, 1870