This page provides catalogs of Vatican Library manuscripts divided by representative subjects of the Biblioteca apostolica vaticana. For additional resources, see:
Volume 1: Guide to Vatican manuscripts with indices by: general history; topics; authors; exhibitions; incipits; facsimiles; and fondi. Volume 2: Guide to Vatican printed books and numismatics, as well as indices by topic and shelfmark for both volumes.
Catalogs exist for the following subjects:
Gregory IX Decretales
Biblioteca Apostolica Vaticana Cod. Pal. lat. 635, f. 4r, detail