Haman's Last Supper - A Christian comparison between Haman's hanging and Christ's crucifixion. - http://www.pbc.org/dp/stedman/esther/0037.html
Haman - Biblical biography of the wicked Persian minister. - http://www.execulink.com/~wblank/20010107.htm
Jewish Encyclopedia: Haman - Overview of the anti-Semitic villain from the traditional Jewish perspective, including rabbinic commentary. - http://www.jewishencyclopedia.com/view.jsp?artid=156&letter=H