• Cardinal Boso, "Vita Alexandri III" [Watterich II, pp. 379-387].
  
  
• Sigebert of Gembloux (diocese of Namur), Chronica, Continuatio Aquicinetina [MGH SS VI (1844) 408-409].
  
  
• Radulfus of Milan [Muratori, Rerum Italicarum Scriptores Tomus VI, columns 1183-1184].
  
  
• Letter of the Bishop of Bamberg, about the state of affairs in Rome following the death of Adrian IV [Watterich II, 454-455].
  
  
• Letter of Pope Alexander III   Eterna et incommutabilis (October 5, 1159) (the narrative of Alexander III's party) [Jaffé II, 10589; MGS IV, nr. XXXIXa]
  
  
• Letter of the Cardinals to the Emperor Frederick Barbarossa (October, 1159) [Watterich II, pp. 464-466]
  
  
• Letter of Alexander III to the Imperial Ambassadors Nos recognoscimus (November 13, 1159) (from Cardinal Boso's "Vita Alexandri III) [Watterich II, p. 383-384; Jaffé II, 10597]
  
  
• Letter of Victor IV, addressed to members of the Imperial party (October 28, 1159) (about his election) [Watterich II, 460-461; Jaffé II, 14426 (9374)].
  
  
• Acts of the Council of Pavia [Mansi, Sacrorum Conciliorum 21 (1776) 1112-1120; MGH Leges 4 Constitutiones 1 no. 189, pp. 260-270] (February 5-11, 1160)
  
  
• Speech of an Advocate of Cardinal Octavianus, Joannes de Romano [MGH Leges 4 Constitutiones 1 no. 187, pp. 257-260]
  
  
• "De schismate inter Adrianum et Octavianum," [Sudendorf, Registrum Erster Theil (Jena 1849), nr. XXIII, pp. 62-66, same as previous item]
  
  
• Letter of Ymarus, Bishop of Tusculum and others (reasons for dissension in the Sacred College) [Watterich II, 461-462]
  
  
• Letter of Chapter of S. Peter's, addressed to the Emperor Frederick (1160) (the narrative of Victor IV's party). [Watterich II, 474-477]
  
  
• Letter of the Emperor Frederick to the Archbishop of Salzburg [February 16, 1160]
  
  
• The Urspergensium Chronicon, on the double election of 1159 and the Council of Pavia in 1160. [MGH SS 23 (1863), p. 352]
  
  
• Letter of the Abbot of Clairvaux to the Bishop of Verona, about the Council of Toulouse (1161).
  
  
• Gerhohus   de investigatione antichristi   Book I   (A.D. 1162) (analysis of election and arguments on both sides) [Watterich II, 504-508; Monumenta Germaniae Selecta IV, xxxix(d), pp. 162-163]
  
  
• Annales Stadenses (excerpt) [Annales Stadenses: MGH SS 16 (Hannoverae 1859), 344]
  
  

 

 

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Philippus Jaffé (editor) Regesta Pontificum Romanorum (editionem secundam correctam et auctam auspiciis Guilelmi Wattenbach; curaverunt S. Loewenfeld, F. Kaltenbrunner, P. Ewald) Tomus secundus (Lipsiae: Veit et comp. 1888) [JL].  

Johann M. Watterich, (editor), Pontificum Romanorum qui fuerunt inde ab exeunte saeculo IX usque ad finem saeculi XIII vitae ab aequalibus conscriptae Tomus II (Lipsiae 1862). [Watterich]

M. Doeberl (editor), Monumenta Germaniae Selecta  4 (München 1890). [MGS]

J. D. Mansi, Sacrorum Conciliorum Nova et Amplissima Collectio Tomus 21 (Venetiis: apud Antonium Zatta, 1776)