This image was acquired from
wikimedia. It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
Keywords from Image Description:
Lincoln Douglas Debates issuec. LincolnDouglas Debates American Civil War commemorative issue Post Officebr scan of postage stamp by Gwillhickers Government Post Office Department PDUSGov History of the United States on stamps Stamps of the United States Abraham Lincoln on stamps LincolnDouglas debates Commemorative stamps of