This work contains 15 key documents illustrative of reform in the Church in the period from 1495 to 1540, an age of great religious ferment and upheaval, which is marked historically by the crisis known as the Protestant Reformation. The documents collected in this work focus on the simultaneous struggle for renewal and reform within the Catholic Church. There was much amiss within the Church at the close of the Middle Ages. The Protestant Reformation threw into high relief the urgent need for religious reform. Involving basic questions of doctrine, practice, and authority, this severe trial put in jeopardy the very life of the existing Catholic Church.