University of Missouri
Famous Trials: The Trial of John Brown
An excellent presentation on the trial and the life of John Brown. You can read a report of the trial itself, view images related to John Brown and much more.
Other
Ny History Net: The "Black Dream" of Gerrit Smith, New York Abolitionist
This site talks about the life of abolitionist Gerrit Smith, who was convicted in the John Brown Raid on Harpers Ferry but maintained innocence in any involvement in planning the raid.
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.