Catholic Encyclopedia - Pope St. Sylvester I, in office for 21 years, while Constantine was emperor. St. Sylvester died in 335. www.newadvent.org/cathen/14370a.htm
For All the Saints - Biographical essay on Pope St. Sylvester I. users.erols.com/saintpat/ss/1231.htm#sylv
James Kiefer's Christian Biographies - Sylvester of Rome, bishop. With prayer in traditional (Anglican) and contemporary language. elvis.rowan.edu/~kilroy/JEK/12/31.html
Lives of the Saints - St. Sylvester, Pope, Confessor. From Alban Butler's Lives of the Saints. www.ewtn.com/library/MARY/SYLVESTR.HTM
Popes Through the Ages - Short biography of Pope St. Sylvester I, from the book by Joseph Brusher. www.cfpeople.org/Books/Pope/POPEp33.htm
The Ecole Glossary - Brief biography of Pope St. Sylvester I, by Karen Rae Keck. cedar.evansville.edu/~ecoleweb/glossary/sylvesteri.html
