Jewish Encyclopedia: Ephraim - Overview of the son of Joseph from the traditional Jewish perspective, including rabbinic commentary. - http://www.jewishencyclopedia.com/view.jsp?artid=404&letter=E
Ephraim - Profile of the son of Joseph from a joint Lutheran and Catholic bible study project. - http://www.aboutbibleprophecy.com/p131.htm
LDS Sources: Ephraim - Summary of the son of Joseph's importance to Mormon thought. - http://www.lightplanet.com/mormons/basic/bible/people/ephraim_eom.htm