Encyclopædia Britannica: John the Baptist
- Short essay on the forerunner of Jesus, based on what the New Testament says. In the 11th edition (1911).
- http://encyclopedia.jrank.org/JEE_JUN/JOHN_THE_BAPTIST.html

Hail, Harbinger of Morn
- Hymn attributed to the Venerable Bede. Modern English translation by Charles Calverley.
- http://oremus.org/hymnal/h/h011.html

Catholic Online: St. John the Baptist
- Short biography.
- http://www.catholic.org/saints/saint.php?saint_id=152

Patron Saints Index: John the Baptist
- Illustrated profile.
- http://www.catholic-forum.com/saints/saintj02.htm

Saint John the Baptist, the Precursor
- From the book "Lives of Saints," published by John J. Crawley.
- http://www.ewtn.com/library/MARY/JOHNBAPT.htm

Catholic Encyclopedia: St. John the Baptist
- Lengthy article on the Precursor.
- http://www.newadvent.org/cathen/08486b.htm