09/17/1858Lincoln and Douglas arrived in Mattoon, Illinois. (By Don Sailer) Source Citation: Allen C. Guelzo, Lincoln and Douglas: The Debates that Defined America (New York: Simon & Schuster, 2008), 300. TabsRecord DataDate Certainty: ExactType: Campaigns/ElectionsRelevance: Personal Major TopicsLincoln-Douglas Debates People Lincoln, Abraham Douglas, Stephen Arnold PlacesMattoon, IL Documents