Inferno and Purgatorio (ff. 1-128), and all historiated initials illuminated by Priamo della Quercia between 1442 and 1450 (previously attributed to Lorenzo Vecchietta, see Pope-Hennessy 1947); Paradiso (ff. 129-190v) illuminated by Giovanni di Paolo c. 1450.
http://www.bl.uk/catalogues/illuminatedmanuscripts/record.asp?MSID=6468
Giovanni_di_paolo,_paradiso_57_rosa_celeste
Giovanni Di Paolo, Candida Rosa in MS Yates Thompson 36
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