Firenze, Biblioteca Laurenziana, Santa Croce IIIsin.6, fol. 97r Stephan Kuttner and Antonio García y García,  "A New Eyewitness Account of the Fourth Lateran Council,"  Traditio 20 (1964) 115-178

Lisbon, Biblioteca Nacional 173 (Alcobaça CCCIV), fol. 1ra Fourth Lateran Council's canons with an "official" notice of the council that is found here and in many other chronicles and other sources. 20 Manuscripts of the Lateran Canons are extant that were sent to various recipients