To the Senate of the United States:
In answer to their resolution of the 16th of December, 1870, I herewith transmit copies of certain reports received at the War Department relative to disloyal organizations in the State of North Carolina, intended to resist the laws or to deprive the citizens of the United States of the protection of law or the enjoyment of their rights under the Constitution of the United States. These reports are in addition to the abstracts of those sent to the Senate on the 13th instant.
U. S. GRANT.
APP NOTE: The documents forwarded by President Grant added to the reports forwarded on 01/13/1871, and again detailed extensive allegations of racial and partisan violence in the former Confederacy. Those documents were published by the Senate Select Commttee to Investigate Alleged Outrages in the Southern States, 42nd Cong. 1st Sess. beginning page LIV (or page 62 of the document we have linked).
Ulysses S. Grant, Special Message Online by Gerhard Peters and John T. Woolley, The American Presidency Project https://www.presidency.ucsb.edu/node/204108