BIBLIOGRAPHICA
POPICA. A Bibliography for the Study of the History of the Popes
  The papacy and modern times : a political sketch, 1303-1870
  The papal monarchy from St. gregory the Great to Boniface VIII. [590-1303]
Leopold von Ranke History of the popes during the last four centuries
  The empire and the papacy, 918-1273
  The History of the Papal States
  View of the state of Europe during the Middle Ages
  Mediaeval Rome, from Hildebrand to Clement VIII, 1073-1600
Villari, Pasquale The barbarian invasions of Italy.
  Life of Gregory the Seventh ; preceded by a sketch of the history of the papacy to the eleventh century
   
The Great Western Schism,1378-1417
Inner history of the great western schism
Saint Catherine of Siena and her times
THE GREAT SCHISM OF THE WEST BY L. SALEMBIER
The Council of Constance, and the war in Bohemia
Pope John the Twenty-third, and Master John Hus of Bohemia
The history of the Council of Constance
   
LEOPOLD VON RANKE The history of the popes : their church and state, and especially of their conflicts with Protestantism in the sixteenth & seventeenth centuries by (3 Vols.)
Allies, Mary Helen The Life of Pope Pius the seventh (1742-1823)
 
JULIAN KLACZKO THE PONTIFICATE OF JULIUS II by
  MATILDA OF TUSCANY LA GRAN DONNA D'ITALIA
  THE LIFE AND TIMES OF ST. ANSELM
  IN THE DAYS OF THE COUNCILS A SKETCH OF THE LIFE AND TIMES OF BALDASSARE COSSA (afterward pope john the twenty-third)
Vaughan, Herbert M. The Medici Popes : (Leo X and Clement VII.)
  The life of Pope Pius II as illustrated by Pinturicchio's frescoes in the Piccolomini Library at Sienna
  The story of the later popes from the great schism to the first years of Pius X
  The life and times of Sixtus the Fifth
  Life and pontificate of Leo the Tenth
  The life and pontificate of Saint Pius the Fifth
  The life of Saint Philip Neri, apostle of Rome
  The Life of Pope Pius the seventh
  The life of Pope Pius IX
  Freemasonry in the Life and Times of Pope Pius IX
  The life of Pope Pius IX : and the great events in the history of the church during his pontificate
  The History of the Italian Revolution, First Period: The Revolution of the Barricades (1796-1849)
  The Roman State, from 1815 to 1850
  The Roman theocracy and the republic, 1846-1849
  The History of the Papal States From Their Origin to the Present Day : 1850
  The last days of papal Rome, 1850-1870
  Life of Pope Leo XIII
  The life and work of Pope Leo XIII
  THE LIFE OF POPE PIUS XII
Wylie James Aitken The papacy ; its history, dogmas, genius, and prospects -
  The devils patriarck; or, A full and impartial account of the notorious life of this present Pope of Rome, Innocent the 11th
   
James J. Walsh The Popes and Science THE HISTORY OF THE PAPAL RELATIONS TO SCIENCE DURING THE MIDDLE AGES AND DOWN TO OUR OWN TIME (A.D. 1908),
  The letter from the pope to the archbishop of Paris : published in the appendix to a report to the electors of the 3rd circle of the Seine