See Sketchbook - cloth covered no. 64 - Fitzwilliam 10705 - 1873 1070(5).f.19; Sketch of Pulpit by Donatello at Prato Cathedral; centre right, sketch of two manuscript pages from Regia Carmina by Convenevole da Prato; lower centre, sketch of a beast with a lion's head, a goat's head and a snake's (?) head attached to a single body