By da Vinci, Leonardo
By Warhol, Andy
By Lorenz, Otto
By Yardley, John
By Bolton, Linda
By Unknown
By Giorgio vasari
By Taschen Publishing
By Marc Quinn
By Andy Goldsworthy, Terry Friedman
By Catherine de Zegher
By Herbert Read
By James Macaulay
By Robert MaCarter, etc.
By Bruce Bernard, Terence McNamee, Bernard, Bruce, McNamee, Terence
By Helena Barrett, John Phillips
By Francesca Crespi
By Robert Hancock-Jones (Townley Grammar School, UK), James Renshaw (Godolphin and Latymer School, London, Laura Swift (The Open University
By Jeremy Maas, etc.
By Philip Drew
By Judith Bumpus
By James Steele
By Robert McCarter
By Robert Doisneau
By Gavin Reid
By Mario Bucci
By Alessandro Parronchi, J.H. White