Isaac 
Discussion of the biblical patriarch and his importance to Judaism.
http://judaism.about.com/library/glossary/bldef-p_isaac.htmCatholic Encyclopedia: Isaac
Commentary on the Biblical patriarch from the traditional Catholic perspective.
http://www.newadvent.org/cathen/08175a.htm
Isaac
Biblical biography of the religious forefather.
http://www.execulink.com/~wblank/isaac.htm
Jewish Encyclopedia: Isaac
Overview of the patriarch from the traditional Jewish perspective, including apocrypha and Talmudic commentary.
http://www.jewishencyclopedia.com/view.jsp?artid=174&letter=I
Isaac and His Sons
Jewish commentary on the true significance of the patriarch's deception by his less-favored son.
http://www.aish.com/literacy/jewishhistory/Crash_Course_in_Jewish_History_Part_6_Isaac_and_His_Sons.asp
The Blessings of Isaac
A Jewish reinterpretation of the patriarch's intentions toward his sons.
http://www.mesora.org/isaaacsblessings.html
Isaac
Profile of the son of Abraham from a joint Lutheran and Catholic bible study project.
http://www.aboutbibleprophecy.com/p20.htm
Concerning Isaac The Legitimate Son Of Abraham
Chapter by the first-century Jewish historian Josephus.
http://www.interhack.net/projects/library/antiquities-jews/b1c13.html
Yitzchak: Too Good for Anywhere Else
Rabbinic traditions about the patriarch.
http://ohr.edu/tw/weinbach/loveland/pol008.htm
Jewish Virtual Library: Isaac
Brief profile of the Biblical patriarch.
http://www.jewishvirtuallibrary.org/jsource/biography/isaac.html
