Laon-Lyon
- Laon. Bibliothèque de Laon. Manuscript. 224. [Pontifical]221 leaves: music. "Ce manuscrit est un pontifical de Laon. ... probablement du premier quart du XIII siècle."--V. Leroquais, I, 169. 3511.65.224 (microfilm).
- Laon. Bibliothèque de Laon. Manuscript. 239. [Gradual]88 manuscript leaves. Music. 3511.65.239 (microfilm).
- Laon. Bibliothèque de Laon. Manuscript. 263. [Hymns and proses]189 manuscript leaves. Music. 3511.65.263 (microfilm).
- Le Mans. Bibliothèque municipale. Manuscript. 437. [Missal, use of Mans]240 leaves: music. "Missel du Mans, avec séquences à la fin; première moitié du XIIIe siècle. Notation à points carrés sur 4 lignes rouges."--Le graduel romain: Les sources, p. 69. 3516.555.61.3 (microfilm).
- Le Mans. Bibliothèque municipale. Manuscript. A 132, fol. 70 -130v. [Pontifical from Le Mans]Leaves 70-130: music. "Ce manuscrit est un pontifical du Mans ... L’écriture et la décoration dénotent la première moitié ou le milieu du XVe siècle."--V. Leroquais, I, 204. 3516.555.61.1 (microfilm).
- Le Mans. Bibliothèque municipale. Manuscript. A 141. [Pontifical from Le Mans]168 leaves: music. "Ce manuscrit est un pontifical du Mans ... L'écriture et la décoration accusent la première moitié ou le milieu du XIIIe siècle."--V. Leroquais, I, 209. 3516.555.61.2 (microfilm).
- Lerida. Catedral Nueva. Archivo. Manuscript. 16, fol. 110-126. [Pontifical from Roda][209] leaves: music. 3517.743.16.1 (34 slides)
- Limoges. Bibliothèque municipale. Manuscript. 2 (17). [Gradual of Alienor de Bretagne]301 manuscript leaves. Illustrations, music. 3524.578.32.1 (microfilm).
- Linz. Bundesstaatliche Studienbibliothek. Manuscript. 125. [Gradual preceded by calendar, followed by tropes, kyriale, sequences, sacramentary, lectionary]254 manuscript leaves. Music. 3524.626.10.1 (microfilm).
- Linz. Bundesstaatliche Studienbibliothek. Manuscript. 384. [Breviary]423 manuscript leaves. Music. 3524.626.10.2 (microfilm).
- Linz. Bundesstaatliche Studienbibliothek. Manuscript. Cod. 544. [Textus liturgicus, cum notis]2 manuscript leaves. Music. 3524.626.10.7 (microfilm).
- Linz. Bundesstaatliche Studienbibliothek. Manuscript. Cod. 545. [Textus liturgicus, cum notis]2 manuscript leaves. Music. 3524.626.10.8 (microfilm).
- Lisbon. Biblioteca Nacional. Fundo Alcobaca. Manuscript. 162. [Pontifical from Braga][85] manuscript leaves: illustrations, music. 2525.771.66.1 (photocopy).
- London. British Library. Manuscript. Additional 16975. [Psalter, hymns, tropes]264 manuscript leaves. Illustrations, music. 3235.16975 (microfilm).
- London. British Library. Manuscript. Additional 17001. [Gradual from Salisbury]175 manuscript leaves. Music. 3235.17001 (microfilm).
- London. British Library. Manuscript. Additional 17002, fol. 107-114r. [Notated breviary from Norwich]Leaves 107-114: illustrations, music. 3235.17002 (microfilm).
- London. British Library. Manuscript. Additional 17004. [Romano-Germanic pontifical][248] leaves: illustrations. 3235.17004 (microfilm).
- London. British Library. Manuscript. Additional 19768. [Troper-proser]81 manuscript leaves. Includes other chants. 3235.19768 (microfilm).
- London. British Library. Manuscript. Additional 19966. [Officium in ecclesia noviomensi cantandum per totium annum]150 manuscript leaves. Music. 3235.19966 (microfilm).
- London. British Library. Manuscript. Additional 23935. [Dominican service book]579 manuscript leaves. Music. 3235.23935 (microfilm).
- London. British Library. Manuscript. Additional 24687. [Gradual of Utrecht]125 manuscript leaves. Illustrations, music. 3235.24687 (microfilm).
- London. British Library. Manuscript. Additional 27630. [Troper]114 manuscript leaves. Music. Augustinian; probably written in Bavaria.
3235.27630 (microfilm). - London. British Library. Manuscript. Additional 28598. [Sarum antiphoner]170 manuscript leaves. Music. 3235.28598 (microfilm).
- London. British Library. Manuscript. Additional 29988. [Antiphoner of Roman use. Includes genealogy of Christ from the Gospels]308 manuscript pages. Illustrations, music. 3235.29988 (microfilm).
- London. British Library. Manuscript. Additional 30058. [Missal of the Chapel of St. Thomas][151] leaves: illustrations, music. 3235.30058 (microfilm).
- London. British Library. Manuscript. Additional 30848. [Antiphonal of Ailos]280 manuscript leaves. Music. British Library title: "Breviarum in usum ecclesiae hispanicae". 3235.30848 (microfilm).
- London. British Library. Manuscript. Additional 30850. [Antiphonal from Silos]243 manuscript leaves. Illustrations, music. Mozarabic antiphoner. 3235.30850 (microfilm).
- London. British Library. Manuscript. Additional 36881. [Collection of sequences, tropes, and other cantiones, with music in two parts, written on 4 lines]28 manuscript leaves. Music. 3235.36881 (microfilm).
- London. British Library. Manuscript. Additional 50120. [Gradual]98 manuscript leaves. Illustrations, music. 3235.50120 (microfilm).
- London. British Library. Manuscript. Additional 57337. [Pontifical from Canterbury][153] manuscript leaves: illustrations, music. Also known as Anderson Pontifical.
3235.57337 (microfilm). - London. British Library. Manuscript. Arundel 156. [Gradual, followed by sacramentary and lectionary]233 manuscript leaves. 3235.156 (microfilm).
- London. British Library. Manuscript. Arundel 248. [Sequences, hymns, theological and moral pieces]201 manuscript leaves. 3235.248 (microfilm).
- London. British Library. Manuscript. Cotton Caligula A XIV. [Troper and proser]92 manuscript leaves. Illustrations, music. 3235.14 (microfilm).
- London. British Library. Manuscript. Cotton Fragments XXIX. [Sequentiary fragments]1 manuscript volume. From Church of Adel. 3235.29.2 (microfilm).
- London. British Library. Manuscript. Cotton Nero E VIII. [Sarum Gradual]83 manuscript leaves. Illustrations, music. 3235.8.3 (microfilm).
- London. British Library. Manuscript. Cotton Vespasian D.I. [Pontifical from England][134] manuscript leaves: illustrations, music. 3235.1.1 (microfilm).
- London. British Library. Manuscript. Cotton Vitellius E XII. [Roman ordines and a pontifical fragment][160] manuscript leaves: music. Badly damaged in a fire in 1731.
3235.12 (microfilm). - London. British Library. Manuscript. Egerton 2615. [Office for the circumcision, motets, Play of Daniel]1 manuscript volume of music. 3235.2615 (microfilm).
- London. British Library. Manuscript. Egerton 3153. [Missal]192 manuscript leaves : illustrations. 5235.3153 (CD-ROM).
- London. British Library. Manuscript. Egerton 3267. [Gradual]129 manuscript leaves. Music. 3235.3267 (microfilm).
- London. British Library. Manuscript. Egerton 3307 [Miscellanea]Includes 16 hymns and versicles, a mass, two settings of the Passions, 12 carols, 22 Latin cantilenae, drinking song. 3235.3307 (microfilm).
- London. British Library. Manuscript. Egerton 931. [Pontifical of Archbishop Guillaume de Melun, from Sens][285] leaves: illustrations, music. 3235.931 (microfilm).
- London. British Library. Manuscript. Egerton 945. [Latin hymns and sequences]328 manuscript leaves. Illustrations, music. 3235.945 (microfilm).
- London. British Library. Manuscript. Harley 2906. [Pontifical from Italy][87] manuscript leaves: illustrations, music. 3235.2906 (microfilm).
- London. British Library. Manuscript. Harley 2942. [Sarum processional, with polyphony; 1 processional hymn]122 manuscript leaves. Music. 3235.2942 (microfilm).
- London. British Library. Manuscript. Harley 2945. [Sarum processional]171 manuscript leaves. Music. Includes polyphonic settings of Laudate pueri and In exitu Israel. 3235.2945 (microfilm).
- London. British Library. Manuscript. Harley 2958. [Ordinal?][68] leaves. 3235.2958 (microfilm).
- London. British Library. Manuscript. Harley 2961. [Collectarius cum hymnis]256 manuscript leaves. Music. 3235.2961 (microfilm).
- London. British Library. Manuscript. Harley 2977. [Ritual, Use of Bury Saint Edmunds][50] leaves. 3235.2977 (microfilm).
- London. British Library. Manuscript. Harley 2983. [Ordinal from Hereford][82] leaves. 3235.2983 (microfilm).
- London. British Library. Manuscript. Harley 3965. [Gradual from Hereford]142 manuscript leaves. Music. 3235.3965 (microfilm).
- London. British Library. Manuscript. Harley 4664. [Breviary, psalter, hymnary]334 manuscript leaves. 3235.4664 (microfilm).
- London. British Library. Manuscript. Harley 4951. [Gradual and tonary from Toulouse]301 manuscript leaves. Aquitanian notation. 3235.4951 (microfilm).
- London. British Library. Manuscript. Harley 524. [Sermons]147 manuscript leaves. Includes hymn, "Veri floris sub figura", folio 63. 3235.524 (microfilm).
- London. British Library. Manuscript. Harley 5958. [Chant fragments]107 manuscript leaves. Music. 3235.5958 (microfilm).
- London. British Library. Manuscript. Harley 978. [Sacred songs or sequences, monologue, motets, rota]14 manuscript pages. Music. 3235.978x (microfilm).
- London. British Library. Manuscript. Landsdowne 462. [Gradual from Norwich]152 manuscript leaves. Music. 3235.462 (microfilm).
- London. British Library. Manuscript. Royal 12 C vi [Canon treatises]3235.10336 (microfilm).
- London. British Library. Manuscript. Royal 2 B XII. [Lectionary of the mass, first part, use of Saint Mary Aldermanbury in London][30] leaves: illustrations, music. 3235.212 (microfilm).
- London. British Library. Manuscript. Royal 2 B XIII. [Lectionary of the mass, second part, use of Saint Mary Aldermanbury in London][38] leaves: illustrations, music. 3235.2.13 (microfilm).
- London. British Library. Manuscript. Royal 2.B.IV. [Gradual-troper-sequentiary from the abbey of Saint Alban]215 manuscript leaves. Music. 3235.2 (microfilm).
- London. British Library. Manuscript. Royal 8 C XIII. [Troper]38 manuscript pages. 3235.8.2 (microfilm).
- London. British Library. Manuscript. Yates Thompson 8, fol. 316-329. [Notated breviary from Bar-le-Duc]Leaves 316-330: illustrations, music. 2235.8 (photocopy).
- Lucca. Biblioteca feliniana. Manuscript. 606. [Missal of Saint-Saveur of Lucca][194] leaves: music. 3534.265.1.3 (microfilm).
- Lucca. Biblioteca feliniana. Manuscript. 603. [Antiphonale and tonale]257 manuscript leaves. Music. 3534.265.1.1 (microfilm).
- Lucca. Biblioteca feliniana. Manuscript. 608. [Ordo Officiorum of Lucca][77] manuscript leaves. Manuscript. Original in Biblioteca feliniana di Lucca (I Lc). 3534.265.1.4 (microfilm).
- Lyon. Bibliothèque municipale. Manuscript. 537. [Antiphonal from Lyon]57 manuscript leaves. Illustrations, music. Manuscript appears to be incomplete; contains folios 105-161 only. 3541.652.79.1 (microfilm).