Probably the finest book ever written about the Rosary; appeals to all ages. Shows the great spiritual power of the Rosary, which is appreciated by few. Tells why the Rosary is the most important private prayer. Canon William says of De Montfort's book, "It goes far beyond mere research. We might say that it contains everything that can be said about the Rosary — its content and form, its real worth, about the instruction necessary for its appreciation and use." Over 5,300,000 sold!