PBS
Pbs: American Experience: John Brown's Holy War: Pottawatomie Massacre
PBS provides information on John Brown's involvement in the Pottawatomie Massacre and the reasons behind the massacre.
PBS
Africans in America: John Brown
PBS Online provides a brief biography of John Brown and the way his life affected the abolitionist movement and contributed to the start of the U.S. Civil War.
Other
Kansas Cyclopedia of State History: Pottawatomie Massacre
Describes the Pottawatomie Massacre which was John Brown's plan to drive the pro-slavers out of the area. From a 1912 encyclopedia.
Curated OER
National Park Service: Fort Scott National Historic Site: Bleeding Kansas
Discusses the effects of the Kansas-Nebraska Act. In particular, the site details incidents from the period known as "Bleeding Kansas."
Other
Course Notes: Us History: 1840 1877: Expansion and Slavery
A list with short descriptions of the issues and events that impacted the expansion of the frontier, with slavery being the most significant issue.
Civil War Home
Home of the American Civil War: John Brown
This website details the life of John Brown, the abolitionist, including his attack at Pottawatomie and the raid at Harpers Ferry. Information is from Historical Times Encyclopedia of the Civil War.