Acts of the Holy Apostle and Evangelist John the T
Apocryphal. Some of the Fathers ascribe authorship to the heretic Leucius. From the Ante-Nicene Fathers, vol. 8, American edition. In HTML, with notes, at Christian Classics Ethereal Library.
Alfred Noyes
Biographical essay on St. John. From the book "Saints for Now", edited by Clare Boothe Luce. With a small icon.
Catholic Encyclopedia
St. John the Evangelist, brother of James and son of Zebedee.
Catholic Information Network
Biography of St. John the Evangelist. Illustrated with a portrait by El Greco.
Catholic Online: St. John the Apostle
Brief biography.
For All the Saints
Illustrated hagiography of St. John the Divine, Apostle and Evangelist.
Greek Orthodox Archdiocese of Australia
Short biography of St. John the Evangelist.
Howard Cannon
Long hagiography of St. John, the Beloved Disciple, contains a lot of legendary material.
James Kiefer's Christian Biographies
St. John, Apostle and Evangelist. With prayer in traditional and contemporary language.
Lives of the Saints
St. John, Apostle and Evangelist. From Alban Butler's Lives of the Saints.
N. Patrinacos
Short biography of St. John the Apostle.
Patron Saints Index
Profile of St. John the Apostle. Illustrated.
S. Baring-Gould
Biography of St. John the Divine, from Baring-Gould's "The Lives of the Saints".
The Ecole Glossary
Short biography of St. John the Apostle, or John the Theologian, by Karen Rae Keck.
The Orthodox Study Bible
Biographical profile of the Apostle and Evangelist John the Theologian.