Houghton Library - Typ 553

Harvard's Houghton Library MS Typ 553 is a weird Use of Rome Book from the late 15th century, only localized to "Northern Italy".  The calendar is unevenly populated, 5 saints in March compared to 20 in January, and has a very large proportion of "high" importance (red) names, more even then normal rank saints. In addition to the usual saints, there are also most of the zodiac signs indicated as well as some here to for yet unidentified liturgical indications(see line 12 in May, f3r below).  The scribal work is also unusual, there is no horizontal ruling at all, so the saints are often not alligned with the date information.  

Cambridge-Harvard Houghton Library-Typ 553 - 3r.jpg