New Advent: Catholic Encyclopedia 
Online version of the classic 1913 encyclopedia explaining Catholic doctrines, past and present. Complete text of all articles.
http://www.newadvent.org/cathen/Jacques Maritain Center Art Gallery
Color illustrations from the Catholic Encyclopedia.
http://classic.archives.nd.edu/maritain/images/ce/art.htm
Wikipedia: Catholic Encyclopedia
An article which talks about the history of the Catholic Encyclopedia published in 1913 and the New Catholic Encyclopedia, which was first published in 1967.
http://en.wikipedia.org/wiki/Catholic_Encyclopedia
Catholicity: Catholic Encyclopedia
Online version of the 1914 encyclopedia. Complete text of all articles. Some articles are also grouped by topic.
http://www.catholicity.com/encyclopedia/
