Notebook No.3 p.183. The source for the copy on the recto was identified by David Ekserdijian as Lamentation by Ambrogio Lorenzetti (documented 1319-48), tempera on panel, 495 x 1405mm, Pinacoteca, Siena; that on the verso as a combination of figures from Madonna della Misericordia by Niccolò di Segna (documented 1331-45), tempera on panel, 1540 x 880mm, Pinacoteca, Siena, and Birth of the Virgin by the Maestro di S Lucchese, tempera on panel, 880 x 670mm, Pinacoteca, Siena. See Apollo, October 2002, p.40.