The interview conducted by Fred Dibble with Felix Haywood in 1937 is part of the Library of Congress, Slave Narratives series. It can be found at https://www.loc.gov/resource/mesn.162/?sp=136&st=image.
For a description of the First Slavery Trail of Tears, see James Arthur Lyon Fremantle. The Fremantle Diary (Boston: Little, Brown & Co., 1954), especially page 65.
Diane Cardenas’s remarks on her ancestor Nathaniel Jackson and the history of the Southern Underground Railroad can be found in Richard Grant, “South to the Promised Land,” in Smithsonian Magazine, July/August 2022, available at https://www.smithsonianmag.com/history/southbound-underground-railroad-brought-thousands-enslaved-americans-mexico-180980328/.
Here’s the verbatim text of General Order No. 3, which General Gordon Granger issued on June 19, 1865. A copy of the original can be found at https://upload.wikimedia.org/wikipedia/commons/c/cc/General_Order_No._3.png.
If you have never read the entire Emancipation Proclamation—and most people haven’t—please read it at https://www.archives.gov/exhibits/featured-documents/emancipation-proclamation (original) or https://www.archives.gov/milestone-documents/emancipation-proclamation (transcription).
For more on the time period just after the Civil War and the Republican Gang of Four, see Ford, Of Blood and Sweat, 283–337.