St. John's 17 is a compilation of texts, tables, maps and diagrams. It is organised around the central theme of time-reckoning and calendar construction - what in the Middle Ages was called computus.http://digital.library.mcgill.ca/ms-17/index.htm
Composite collection from the Abbey Library of St. Gall, including the oldest Vulgate version of the Gospels, fragments of Psalm manuscripts in Latin and in Greek from the 7th and the 10th centuries respectively, and a large number of Irish fragments…
The Golden Psalter (Psalterium aureum) of St. Gall, written and illuminated with 17 miniatures, either in the West Franconian empire (Soissons?) or in the monastery of St. Gall with the participation of West Franconian scribes and illuminators. (smu)