10-1 The Lincoln-Douglas Debates: http://www.digitalhistory.uh.edu/disp_textbook_print.cfm?smtid=2&psid=3284
10-2 Dred Scott: http://www.pbs.org/wgbh/aia/part4/4p2932.html
10-3 Harpers Ferry: http://www.pbs.org/wgbh/aia/part4/4p1550.html
10-4 Lincoln Takes Office: http://www.digitalhistory.uh.edu/disp_textbook_print.cfm?smtid=2&psid=305
10-5 Fort Sumter: http://www.us-civilwar.com/sumter.htm
10-6 Northern and Southern Strengths and Weaknesses: http://www.ushistory.org/us/33b.asp
10-7 Civil War Leaders: http://www.ushistory.org/us/33f.asp
10-8 Bull Run and the Beginning of the Civil War: http://www.digitalhistory.uh.edu/disp_textbook_print.cfm?smtid=2&psid=3063
10-9 Abraham Lincoln: http://www.whitehouse.gov/about/presidents/abrahamlincoln