Digital Library of the Catholic Reformation (Alexander Street) This link opens in a new windowThe Digital Library of the Catholic Reformation gives researchers immediate, Web-based access to an extensive range of seminal works from the Reformation and post-Reformation eras. With 845 titles by 277 authors, the collection covers theological writings, biblical commentaries, confessional documents, social and political works, sermons, letters, polemical treatises, and other key documents from this critical epoch in European history.