Catholic Online: St. Tarsicius
- Brief paragraph.
- http://www.catholic.org/saints/saint.php?saint_id=322

Catholic Encyclopedia: St. Tarsicius
- Roman martyr of the third or early fourth century. St. Tarsicius was carrying the Blessed Sacrament on his person, and refused to surrender it when beset by a pagan mob.
- http://www.newadvent.org/cathen/14461a.htm

St. Tarcisius
- His story, for children. By Clifford Stevens.
- http://www.ewtn.com/library/MARY/TARCIS.htm

St. Tarcisius, Martyr
- Profile, from a book by Berchmans Bittle.
- http://www.ewtn.com/library/MARY/TARCISI.htm

Tarcisius
- Illustrated profile, with links. Tarcisius is the patron saint of altar servers and of first communicants.
- http://www.catholic-forum.com/saints/saintt08.htm