Just FYI, here's how to tell if your leaf might be part of the Beauvais Missal: leaves of the Beauvais Missal measure around 295 x 205 mm and have 15 or 21 lines of text, or ten staves of music, in two columns. Might look like any of these: pic.twitter.com/Q2jSqElcOl

— Lisa Fagin Davis (@lisafdavis) September 25, 2022