* Foner, Eric. ''Free Soil, Free Labor, Free Men: The Ideology of the Republican Party before the Civil War'' 1970 [http://www.questia.com/PM.qst?a=o&d=90104191 online edition] | * Foner, Eric. ''Free Soil, Free Labor, Free Men: The Ideology of the Republican Party before the Civil War'' 1970 [http://www.questia.com/PM.qst?a=o&d=90104191 online edition] |