Other
American Abolitionism Project: A Brief History of American Abolitionist Movement
Provides a short history of the American abolitionist movement, and breaks the movement down into different categories of abolitionists and some key people involved in each group. Includes links to additional information.
Other
History Net: The Madness of John Brown
Was John Brown mad, suffering from a mental disorder or perfectly sane? This article briefly contrasts the possibilities. (July 2009)