Abraham Lincoln speaks before an attentive audience at Knox College in Galesburg, Ill., during his famed series of debates with Illinois Senator Stephen Douglas in 1858. (Kean Collection/Getty Images)
Kean Collection/Getty Images
Abraham Lincoln speaks before an attentive audience at Knox College in Galesburg, Ill., during his famed series of debates with Illinois Senator Stephen Douglas in 1858. (Kean Collection/Getty Images)
Kean Collection/Getty Images