William W. Freehling. The Road to Disunion. Volume 2, Secessionists Triumphant, 1854–1861 .:The Road to Disunion. Volume 2, Secessionists Triumphant, 1854–1861.
William W. Freehling. The Road to Disunion. Volume 2, Secessionists Triumphant, 1854–1861 .:The Road to Disunion. Volume 2, Secessionists Triumphant, 1854–1861.