President John F. Kennedy and his brother Robert F. Kennedy at the White House, May 4, 1961. This image was captured by Times staff photographer George Tames (1919 - 1994), whose work for nearly half a century changed the way Americans looked at presidents and political power. Tames's photographs chronicled 10 Presidents from Franklin D. Roosevelt to George Bush, countless members of Congress and heads of state, from Winston Churchill to Nikita Khrushchev.