museums and institutions:
Attributed works:
1. The Virgin of the rocks, by Leonardo da Vinci. c.1483-91. Canvas transferred from panel, 198 by 123 cm. (Musée du Louvre, Paris).
Attributed works:
10. Head of St Philip in the Last Supper by Leonardo da Vinci in Milan with a diagram of the underdrawing for the Virgin's head in Composition A reversed and overlaid.
Attributed works:
11. Study for the head of St Philip, by Leonardo da Vinci. 1493. Black chalk, 19 by 15 cm. (Royal Library, Windsor, no.12551).
Attributed works:
12. St Jerome praying in the wilderness, by Leonardo da Vinci. Here dated c.1491-93. Panel, 102.8 by 73.5 cm. (Monumenti, Musei e Gallerie Pontificie, Vatican City).
Attributed works:
13. Detail infra-red reflectography scan of Fig.12 showing St Jerome's head and part of landscape.
Attributed works:
14. Detail infra-red reflectography scan of Fig.12, showing St Jerome's feet and part of lion.
Attributed works:
15. Detail infra-red reflectography scan of Fig.2, showing the angel (Composition B).
Attributed works:
16. Head of a child in three-quarter view, cartoon for the head of St John in Fig.1, by Leonardo da Vinci. c.1483. Metalpoint largely reworked with pen, brush and brown ink and highlighted with white gouache on prepared grey-beige paper, pricked for transfer, irregularly cut, max. 13.4 by 11.9 cm. (Musée du Louvre, Paris).
Attributed works:
17. Detail infra-red reflectography scan of Fig.2, showing the head of the Christ Child (Composition B).
Attributed works:
2. The Virgin of the rocks, by Leonardo da Vinci and collaborators. Here dated c.1491-1508. Panel, 189.5 by 120 cm. (National Gallery, London).
Attributed works:
3. Infra-red reflectography scan of Fig.2.
Attributed works:
4. Outline diagram of the first underdrawing of Fig.2 (Composition A).
Attributed works:
5. Outline diagram of the second underdrawing of Fig.2 (Composition B), laid over the painting.
Attributed works:
6. Detail of infra-red reflectography scan (Fig.3), showing right arm and hand in Composition A.
Attributed works:
7. Detail infra-red reflectogram mosaic of Fig.2, showing the head in Composition A above the painted Virgin.
Attributed works:
8. Detail from an ultraviolet photograph of Studies of architecture and machinery, male head in profile and of a Virgin adoring the Christ Child, by Leonardo da Vinci. Here dated c.1491-93. Silverpoint partly reworked with pen and brown ink on light blue prepared surface, 18.3 by 13.7 cm. (Royal Library, Windsor, no.12560).
Attributed works:
9. Design for a Nativity or an Adoration of the Christ Child; perspectival projection, by Leonardo da Vinci. Here dated c. 1485-90. Metalpoint partly reworked with pen and brown ink on pink prepared paper, and lines ruled with metalpoint, 19.4 by 16.3 cm. (Metropolitan Museum of Art, New York, Rogers Fund, 1917 17.142.1).
