Jewish Encyclopedia: Abigail 
Overview of King David's second wife from the traditional Jewish perspective, including apocrypha and Talmudic commentary.
http://www.jewishencyclopedia.com/view.jsp?artid=279&letter=AAvigail's Righteous Conduct Within a Bad Relationship
Contemporary Jewish analysis of the Biblical widow's first marriage and exemplary behavior.
http://www.torah.org/learning/women/class61.html
Abigail
Biblical biography of the politically astute second wife of David.
http://www.execulink.com/~wblank/abigail.htm
Abigail the Carmelitess
The Biblical story of David and his second wife, from the King James translation.
http://www.topical-bible-studies.org/48-0073.htm
Avigayil
Midrashic commentary on the righteousness of the Jewish prophetess.
http://members.tripod.com/~ohave/chumash/avigayil.htm
