the National Gallery Official page from the Louvre Leonardo da Vinci and the Virgin of the Rocks, Which is the earlier? A different point of view Illustrations of the Paris and London versions geological analysis of the two paintings by Ann C Pizzorusso The side panels, National Gallery, click link for the other one Leonardo da Vinci: anatomical drawings from the Royal Library, Windsor Castle, exhibition catalog fully online as PDF from The Metropolitan Museum of Art, which contains material on Virgin of the Rocks (see index) CNN: "Sketches hidden underneath Leonardo's 'Virgin of the Rocks' revealed after 500 years" National Gallery reveals images of ‘abandoned’ angel and Christ underneath The Virgin of the Rocks Collections of the National Gallery, London Paintings by Leonardo da Vinci Paintings in the Louvre by Italian artists Paintings of the Madonna and Child by Leonardo da Vinci Paintings depicting John the Baptist Angels in art 1480s paintings 1490s paintings 1500s paintings Musical instruments in art Altarpieces Uriel Nude art