Acts of Paul and Thecla - Very old (Tertullian knows of it) and popular book that was not accepted as Scripture. God preserves St. Thecla's life and virginity through several miraculous deliverances. - http://www.ccel.org/ccel/schaff/anf08.vii.xxvi.html
Life of St. Thekla - A convert of the Apostle Paul during his imprisonment in Iconium, later given the title "Protomartyr." Article from the Self-Ruled Antiochian Orthodox Christian Archdiocese of North America. - http://www.antiochian.org/1440/
Catholic Online: St. Thecla - Whirlwind tour of her story. - http://www.catholic.org/saints/saint.php?saint_id=323
The Acts of Thecla: A Pauline Tradition Linked to Women - History and interpretion of an apocryphal book about Thecla. Considers the power of the story in her day and ours. - http://gbgm-umc.org/umw/corinthians/theclabackground.stm