Gregory the Great, Pope, Doctor - Long essay on why Gregory deserves to be called "the Great." - http://www.saintpatrickdc.org/ss/0903.htm#greg
The Holiness of Gregory - An essay on why Pope Gregory I deserves to be called "Great." - http://georgetown.edu/faculty/jod/holiness.html
Jewish Encyclopedia: Gregory the Great - Profile, focused on his aversion to Judaism and efforts to convert Jews to Christianity. - http://www.jewishencyclopedia.com/view.jsp?artid=432&letter=G
The Ecole Glossary: Gregory the Great - Biographical profile of the pope known in the Christian East as St. Gregory Dialogos. - http://www2.evansville.edu/ecoleweb/glossary/gregorygr.html
The Procession of Saint Gregory - The half of a two-page miniature in the Très Riches Heures du Duc de Berry which portrays Gregory the Great in an incident described in the Golden Legend. With commentary. - http://www.christusrex.org/www2/berry/f71v.html
Gregory the Great, Bishop and Doctor - Biography. With prayer in traditional and contemporary language. - http://elvis.rowan.edu/~kilroy/JEK/03/12.html
Pope St. Gregory I ("the Great") - Biographical article on this Doctor of the Church, d. 604. In the Catholic Encyclopedia. - http://www.newadvent.org/cathen/06780a.htm
Iucunda Sane - On Pope Gregory the Great: encyclical of Pope Pius X, 1904. - http://www.catholic-forum.com/saints/stg02001.htm