Authors: C

Catechisms

The Catechetical Instructions of St. Thomas Acquinas (.pdf)
The Catechism of Trent (.pdf)
The Catechism of St. Pope Pius X (.pdf)
The Baltimore Catechism (.pdf)
The Catechism of the Catholic Church, 2nd Edition (download link) (.html link)

Catherine of Siena, TOP, Saint, Doctor of the Church [1347-1380]

The Dialogue of St. Catherine of Siena (.pdf)

Chesterton, Gilbert Keith (G.K.)

Saint Thomas Aquinas (.pdf)
The Catholic Church and Conversion (.pdf)
The Everlasting Man (.pdf)
Orthodoxy(.pdf)
Trees of Pride (.pdf)
Tales of the Long Bow (.pdf)
The Secret of Father Brown (.pdf)
The Incredulity of Father Brown (.pdf)
The Scandal of Father Brown (.pdf)

Chrysostom, John; Saint, Doctor [347 - 407]

Homilies on the Gospel of St. Matthew (.html)— A collection of 90 homilies covering the Gospel According to St. Matthew

Code of Canon Law

Code of Canon Law (1983) (.pdf) — Indexed Copy

Congregation for Doctrine of the Faith

Dominus Iesus (2000) (.pdf)