Sisters of Notre Dame: St. Julie Billiart - Two short illustrated biographies, the miracles that preceded her canonization, and a prayer. - http://www.snd1.org/Julie.html
The Blessed Julie Billiart - Foundress of the Congregation of Sisters of Notre Dame. From Alban Butler's Lives of the Saints. - http://www.ewtn.com/library/MARY/BILLIART.htm
Catholic Encyclopedia: St. Julie Billiart - Biographical article on the founder of the Sisters of Notre Dame de Namur. She is also called Julia, and died in 1816. - http://www.newadvent.org/cathen/08559a.htm