De regimine mensium Save Share Ask Question Beyond Words Illuminated Manuscripts in Boston Save Share Ask Question Parchment, 3 leaves, 193 x 147 (148–54 x 98) mm Collection Houghton Library Date c. 1250–1300 (?) External Link http://nrs.harvard.edu/urn-3:FHCL.HOUGH:881146 Institution Harvard University Map PDFs Place Austria Shelfmark MS Typ 590