Page 3 Walter Freeman: Bettmann/Getty Images; Cesare Lombroso drawing: Wellcome Collection; Case 1071 X-ray: the Mütter Museum of the College of Physicians of Philadelphia.
Page 4 Werner Forssmann: Nationaal Archief/Collectie Spaarnestad/ANP/Bridgeman Images; Stephen Hales: Granger/Bridgeman Images; Louis Washkansky: Popperfoto/Getty Images.