004 - Ubi Primum On the Immaculate Conception February 2 1849

Delve into the profound insights of Pope Pius IX, the longest-reigning pontiff since St. Peter, who authored over forty Encyclicals during his remarkable thirty-two-year papacy (1846-1878). This collection features twenty-six of his pivotal letters, offering a unique glimpse into the thoughts and teachings of a transformative era in the Church. (Summary by M.S.C. Lambert, LC)