Liber extravagantium decretalium (Decretales Gregorii IX) (1234) [text-searchable pdf] [html] [spreadsheet of canons with incipits and inscriptions]
Liber extravagantium decretalium. Edited by Emil Friedberg. In Corpus Iuris Canonici, volume 2. Leipzig: Bernhard Tauchnitz, 1881. Reprint Graz: Akademische Druck- u. Verlagsanstalt, 1959. PDF hosted by HathiTrust; HTML hosted by Bibliotheca Augustana; spreadsheet courtesy of Ed Reno.
Goffredus de Trano, Summa super titulis Decretalium (ca. 1243) [pdf]
Gottofredo da Trani (Goffredus Tranensis). Summa super titulis Decretalium. Lyon, 1519. Reprint Aalen: Scientia, 1968. Hosted by Colby College.
Pope Innocent IV (Sinibaldo dei Fieschi), Apparatus in quinque libros Decretalium (ca. 1245) [pdf]
Pope Innocent IV. Apparatus in quinque libros Decretalium. Frankfurt, 1570. Hosted by Colby College.
Hostiensis (Henry of Susa), Summa Aurea (ca. 1253) [pdf: lib. 1; lib. 2; lib. 3; lib. 4; lib. 5]
Hostiensis. Summa aurea. Venice, 1574. Hosted by Colby College.
Bernard of Parma, Glossa ordinaria (1263) [high-resolution digital images]
Corpus juris canonici with Glossa ordinaria. Rome, 1582. Hosted by UCLA Library.
The Digital Decretals provides downloadable and searchable Word and pdf files of the complete text. Created by Edward A. Reno III.