Hilaire Belloc's best work, The Path to Rome is less concerned with Rome itself than with a pilgrim's journey to the Eternal City. A spirited Catholic apologist, Belloc traveled on foot from France, across the Alps and the Apennines in order to "see all Europe which the Christian Faith has saved." Includes 77 line drawings. Unabridged republication of the classic 1902 edition.
Here's a sample of other books in this Dover category
Orthodoxy by G. K. Chesterton Chesterton explains the values and ideals that constitute the foundation of Christianity, adopting an informal style in his scholarly arguments in favor of faith as an affirmation of human freedom.
The Ball and the Cross by G. K. Chesterton Chesterton's second novel chronicles a hot dispute between two Scotsmen, a Roman Catholic, and an atheist, whose fanatically held opinions inspire a host of comic adventures. Introduction by Martin Gardner.