“Rights of Congress to Legislate for the Territories of the US, and its Duty to Exclude Slavery Therefrom”, by Horace Mann (MA) June 30, 1848

The account of the Hearings before the United States Commission on CIVIL RIGHTS Vol. 1 - Voting, held in February 16-20,1965 in Jackson Mississippi

“Employment of Laborers of African Extraction in the Island of St. Croix”, 37th Congress. June 6, 1862

Hon. John P. Hale (NH) "The Wrongs of Kansas", given Feb. 26, 1856