This late 15th or early 16th century calendar, consisting of only
six leaves, contains in addition to the feast days and the saints
also the Dedicatio Murensis. After the Reformation, the abbots
Christoph von Grüt (1549-1564), Hieronymus Frey (1564-1585) and
Jakob Meyer (1585-1596) used it to record the dates of their entry
into the monastery, their election as abbot, the death of their
successor and other events at the monastery.