An original leaf from a choir book, written by hand in Latin, on vellum, with 5-line staves and rubrics in red and script and Gregorian notation in black. Large initial “A” opens an Alleluia chant. Calligraphic initial “B” on verso starts a text from the Psalms. Size: 20 x 16 inches. Archival mat size: 24 x 18 inches.
