The Ecole Glossary: Adelaide
- Short biography, by Karen Rae Keck.
- http://www2.evansville.edu/ecoleweb/glossary/adelaide.html

St. Adelaide
- Or Adelheid. The widow of Otho, she died in 999. Feast day: 16 December. Biography in the Catholic Encyclopedia.
- http://www.newadvent.org/cathen/01140c.htm

St Adelaide (931-999 AD)
- Entry from the "The Saints: A Concise Biographical Dictionary."
- http://www.ewtn.com/library/mary/adelaide.HTM

Patron Saints Index: Adelaide
- Illustrated profile.
- http://www.catholic-forum.com/saints/sainta21.htm