Tsaddikim: Issachar 
Presenting the Chassidic position on the son of Jacob, including beliefs about his later reincarnations.
http://judaicaplus.com/Tzadikim/issachar.htmIssachar
Profile of the son of Jacob from a joint Lutheran and Catholic bible study project.
http://www.aboutbibleprophecy.com/p127.htm
Issachar
Biblical biography of the son of Jacob.
http://www.execulink.com/~wblank/20001015.htm
Catholic Encyclopedia: Issachar
Commentary on the son of Jacob from the traditional Catholic perspective.
http://www.newadvent.org/cathen/08201a.htm
Jewish Encyclopedia: Issachar
Overview of the ninth son of Jacob from the traditional Jewish perspective, including rabbinic commentary.
http://www.jewishencyclopedia.com/view.jsp?artid=360&letter=I
Jewish Virtual Library: Issachar
Brief profile of the priest, with links to pertinent Torah passages.
http://www.jewishvirtuallibrary.org/jsource/biography/issachar.html
