Burr, Aaron - Encyclopedia Americana biography of Jefferson's vice president (1801-1805), who famously dueled with Alexander Hamilton. - http://ap.grolier.com/article?assetid=0067730-00
The Duel - The story of Burr's rivalry with Alexander Hamilton, culminating in the most famous duel in American history. Companion to a PBS documentary in the series The American Experience. Has program and interview transcripts, background material and a chronology - http://www.pbs.org/amex/duel/