Pleased to have this new essay up:
On The Arts Fuse: Susan De Sola Rodstein provides a fascinating and in-depth look at "Drawing in Silver and Gold: Leonardo to Jasper Johns." Published by Princeton University Press, the beautifully illustrated catalogue, with essays by conservators and curators, focuses upon six centuries of metalpoint drawing, a little studied and still poorly understood medium. The exhibition that inspired the book is current at the British Museum through December 6.
Here. (fixed the link!)