Digital History
Digital History: "Bleeding Kansas" and "Bleeding Sumner"
Read about how the concept of popular sovereignty expressed in the Kansas-Nebraska Act resulted in political intrigue and murder in Kansas and the caning of a U.S. Senator in the Senate chamber.
A&E Television
History.com: American Presidents: Franklin Pierce
This easy-to-navigate site has President Franklin Pierce's biography, significant events in his life, an image gallery, and video clips.