Here are some of the resources and sites we used:
http://blackhistory.com/content/60916/13th-14th-and-15th-amendments
Http://www.nlnrac.org/american/civil-war-amendments
http://www.loc.gov/rr/program/bib/ourdocs/13thamendment.html
http://blackhistory.com/content/60916/13th-14th-and-15th-amendments
Http://www.nlnrac.org/american/civil-war-amendments
http://www.loc.gov/rr/program/bib/ourdocs/13thamendment.html