Collections
1. Libros
429 Volumes (399 Extant and 30 Missing)
2. Becerros
58 Volumes (57 Extant and 1 Missing)
3. Folletos
224 Volumes (166 Extant and 58 Missing)
4. Libritos
777 Volumes (772 Extant and 5 Missing)
5. Rare UST Press
Books and pamphlets are arranged chronologically (17th to early 20th century).