Acts of the Holy Apostle Thomas
This first-century book was not accepted as Scripture, largely because it alleges that St. Thomas baptized with oil only, not water. Recounts St. Thomas's missionary journey to India.
Catholic Online: St. Thomas
Article on the patron of architects.
Saint Thomas
Miniature from a fifteenth-century breviary.
St. Thomas the Apostle
Article on Thomas in Scripture and in legend. From the Catholic Encyclopedia.
Thomas
What happened to St. Thomas after Pentecost is unknown. . . but there has certainly been a lot of speculation.
Thomas Didymus, Apostle
Hagiography. With some discussion of the St. Thomas Christians in India, and links to apocryphal works.
Vietnamese Eucharistic Youth Society: St. Thomas
Brief profile, best suited to children.