Loewen, James W. (2007). Lies My Teacher Told Me: Everything Your American History Textbook Got Wrong. The New Press, New York, p. 193. ISBN 978-1-56584-100-0 "White Southerners founded the Confederacy on the ideology of white supremacy. Confederate soldiers on their way to Antietam and Gettysburg, their two main forays into U.S. states, put this ideology into practice: they seized scores of free black people in Maryland and Pennsylvania and sold them south into slavery. Confederates maltreated black U.S. troops when they captured them."
Loewen, James W. (1999). Lies Across America: What American Historic Sites Get Wrong. Touchstone, Simon & Schuster, Inc., New York, p. 350. ISBN 0-684-87067-3. Geraadpleegd op March 5, 2016 "Lee's troops seized scores of free black people in Maryland and Pennsylvania and sent them south into slavery. This was in keeping with Confederate national policy, which virtually re-enslaved free people of color into work gangs on earthworks throughout the south."
Congress of the Confederate States of America, No. 5.. Joint Resolution on the Subject of Retaliation (May 1, 1863). Geraadpleegd op March 6, 2016. [dode link]
Grant, Ulysses, Letter to Abraham Lincoln (August 23, 1863). Gearchiveerd op May 3, 2014. Geraadpleegd op May 3, 2014. “I have given the subject of arming the Negro my hearty support. This, with the emancipation of the Negro, is the heaviest blow yet given the Confederacy. The South rave a great deal about it and profess to be very angry.”
Simpson, Brooks D., The Soldiers' Flag?. Crossroads. WordPress (July 5, 2015). “[T]he Army of Northern Virginia was under orders to capture and send south supposed escaped slaves during that army's invasion of Pennsylvania in 1863.”
Steven G. Collins, "System in the South: John W. Mallet, Josiah Gorgas, and uniform production at the confederate ordnance department." Technology and culture (1999) 40#3 pp: 517–544 in Project MUSE.
Grant, Ulysses, Letter to Abraham Lincoln (August 23, 1863). Gearchiveerd op May 3, 2014. Geraadpleegd op May 3, 2014. “I have given the subject of arming the Negro my hearty support. This, with the emancipation of the Negro, is the heaviest blow yet given the Confederacy. The South rave a great deal about it and profess to be very angry.”