Gregory VII's Letters (a selection)

Council of Rome 1074
Gregory VII's Letters to England Dictatus papae
Gregory VII Lay Investiture Bruno of Segni, On simoniacs
Two Anti-Gregorian Tracts Gregory VII's First Deposition and Banning of Henry IV (Feb 22, 1076)
Archbishop Liemar of Bremen to Bishop Hezilo of Hildesheim (1075) Henry IV's  Letter to Gregory VII, Jan 24 1076
The Annals of Lambert of Hersfeld Chronicle of Montecassino