museums and institutions:
Attributed works:
19. Virgin and Child with St Anne, by Michelangelo. Pen, 25.4 by 17.7 cm. (Ashmolean Museum, Oxford.)
Attributed works:
20. Sketches for Unidentified Subjects, by Michelangelo. Reverse of the Sheet Illustrated in Fig.19.
Attributed works:
21. St Matthew, by Michelangelo. Marble, 271 by 71 cm. (Accademia delle Belle Arti, Florence.)
Attributed works:
22. Sketch of a Male Head, by Michelangelo. Detail from the Sheet Illustrated in Fig.20.
Attributed works:
23. Head of the St Matthew Illustrated in Fig.21. [by Michelangelo. Marble, 271 by 71 cm. (Accademia delle Belle Arti, Florence.)]
Attributed works:
24. Doni Madonna, by Michelangelo. Panel, 91 by 80 cm. (Uffizi.)
Attributed works:
25. St Matthew Illustrated in Fig.21, Seen in Reverse. [by Michelangelo. Marble, 271 by 71 cm. (Accademia delle Belle Arti, Florence.)]
Attributed works:
26. Copy after Two Figures from Giotto's St John the Evangelist in the Cappella Peruzzi, Santa Croce, by Michelangelo. Pen, 31.7 by 20.4 cm. (Musée du Louvre.)
Attributed works:
27. Study Probably for St Matthew and a Sketch of Horsemen for the Battle of Cascina, by Michelangelo. Pen, 18.3 by 17.7 cm. (British Museum.)
Attributed works:
28. Virgin and Child with St Anne, by Leonardo da Vinci. Pen and Black Chalk, 16 by 12.5 cm. (Musée du Louvre.)
Attributed works:
29. Virgin and Child with St Anne and the Infant St John, by Leonardo da Vinci. Cartoon, 1.415 by 1.04 m. (National Gallery.)
Attributed works:
30. Studies for a Leda, by Leonardo da Vinci. Pen and Black Chalk, 28.7 by 40.5 cm. (Royal Library, Windsor Castle.) Reproduced by Gracious Permission of H. M. The Queen.
Attributed works:
31. Study for a Leda (Seen in Reverse), by Leonardo da Vinci. Pen and Wash, 16 by 13.9 cm. (Collection Duke of Devonshire.) Reproduced by Permission of the Trustees of the Chatsworth Settlement.
Attributed works:
32. Study for a Leda, from the Sheet Illustrated in Fig.30. [by Leonardo da Vinci. Pen and Black Chalk, 28.7 by 40.5 cm. (Royal Library, Windsor Castle.) Reproduced by Gracious Permission of H. M. The Queen.]