Henry George, Dr. Edward McGlynn, and Pope Leo XIII
- Conference paper proposes that Rerum novarum was a thoroughly Thomist rebuke of Georgist ideas.
- http://www.earthsharing.org.au/index.php?module=Website&action=Text&content=1128571045625-0104&parentContent=1125898930309-8271

A Brief History of Pope Leo XIII
- Outline of his career, thoughtful criticism of his successes and failures, list of his writings as pope.
- http://www.greeleynet.com/~maxalla/OKHSSub/LeoXIII.html

Daily Catholic: Pope Leo XIII
- Profile of the pope voted one of the top 100 Catholics of the 20th century by the site's visitors.
- http://www.dailycatholic.org/issue/archives/1999Nov/213nov10,vol.10,no.213txt/nov10top.htm

Patron Saints Index: Pope Leo XIII
- Illustrated profile.
- http://www.catholic-forum.com/saints/pope0256.htm

Leo XIII, pope
- Biographical entry in the Columbia Encyclopedia. Includes brief bibliography.
- http://www.bartleby.com/65/le/Leo13.html

Leo XIII
- Biographical essay.
- http://www.cfpeople.org/Books/Pope/POPEp254.htm

Catholic Encyclopedia: Pope Leo XIII
- Lengthy biographical article on the author of "Rerum novarum."
- http://www.newadvent.org/cathen/09169a.htm