A Popular Life Of Our Holy Father Pope Pius The Ninth: Drawn From The Most Reliable Authorities (1877) By Brennan, Richard By Thriftbooks, Hardcover

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The Pope And The Professor: Pius IX, Ignaz Von Dollinger, And The Quandary Of The Modern Age

The Apostolic Letter Of Pope Pius IX: To All Protestants And Other Noncatholics (1870) By Pius, Pope By Thriftbooks, Paperback

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Pius IX And His Time (1880) By Dawson, Aeneas Macdonell By Thriftbooks, Paperback

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