Image Credit Source: U.S. Post Office Hi-res scan of postage stamp by Gwillhickers. Image Credit:U.S. Government, Post Office Department Used By:Thomas Knapp Submitted By:Thomas Knapp Added On: 09/20/2016 at 8:00 PM EDT Image Caption: Lincoln Douglas Debates 1958 issue-4c Owner Name / Source: (From Wikimedia) U.S. Government, Post Office Department URL of Owners Page:https://commons.wikimedia.org/wiki/File:Lincoln_Douglas_Debates_1958_issue-4c.jpg Image Source: WikimediaPhotos License:Public domain Notes: From CommonsSearch 'Lincoln Douglas debates' Search