The Ecole Glossary: Louis IX
- Short biography of St. Louis, by Melissa Smeltzer.
- http://www2.evansville.edu/ecoleweb/glossary/louis9.html

Columbia Encyclopedia: Louis IX, king of France
- A short biographical article on St. Louis, with links to related topics.
- http://www.bartleby.com/65/lo/Louis9Fr.html

Saint Louis, King of France, 1214 - 1270
- Illustrated biography of St. Louis, by Eloise Wilding.
- http://www.stlouisparish.org/html/king.htm

The Hours of Saint Louis
- A book of hours made for his great-granddaughter included prayers in honor of the sainted king. Illumination depicting St. Louis, and explanation.
- http://www.metmuseum.org/explore/jde/jde6.htm

Memoirs of Saint Louis
- Biography of St. Louis by a contemporary, Jean de Joinville.
- http://etext.lib.virginia.edu/etcbin/toccer-new?id=WedLord&tag=public&images=images/modeng&data=/texts/english/modeng/parsed&part=0

St. Louis IX
- Biographical article on St. Louis, King of France, d. 1270. In the Catholic Encyclopedia.
- http://www.newadvent.org/cathen/09368a.htm

Saint Louis, Confessor, King of France
- From the book "Lives of Saints," published by John J. Crawley.
- http://www.ewtn.com/library/MARY/LOUIS.htm

James Kiefer's Christian Biographies: Louis IX, King of France
- With prayer in traditional and contemporary language.
- http://elvis.rowan.edu/~kilroy/JEK/08/25.html

Patron Saints Index: Louis IX
- Illustrated profile of St. Louis, also known as Louis Capet.
- http://www.catholic-forum.com/saints/saintl07.htm