A Day to Honor Saint Barbara: By Jonathan Young. Says her "mythic tale is a variation on the Rapunzel motif." Originally published in the Santa Barbara News-Press.
Catholic Encyclopedia: St. Barbara: Legendary virgin and martyr, first mentioned in the early seventh century. Alleged to have died in the third or fourth century, but date is uncertain and place of martyrdom varies.
Our Patron Saint: Story of the patron saint of St. Barbara's Parish, who is also the patron saint of prisoners. Includes several icons.
Patron Saints Index: Barbara: Illustrated profile. In 1969, Barbara was removed from the Roman calendar, and her cult suppressed, because of the unreliability of the early evidence for her.
The Ecole Glossary: Barbara: Brief summary of the story of St. Barbara and why her cultus has been suppressed in the Catholic Church, by Karen Rae Keck.