![Portrait of Leonardo da Vinci attributed to Francesco Melzi](https://cmsadmin.rct.uk/sites/default/files/lead_image_half_height/RC1894_Leonardo%201600%20x%20625_Yellow.jpg)
In Conversation: Andrew Graham-Dixon and Martin Clayton
Writer and broadcaster Andrew Graham-Dixon joins Martin Clayton, Head of Prints and Drawings and curator of Leonardo da Vinci: A Life in Drawing at this Queen's Gallery, Buckingham Palace event to discuss how drawing was fundamental to Leonardo's artistic and scientific projects.