evidence: The cover of TIME has often been called the most important real estate in journalism—making some of the world’s best photographers and artists its architects. Andy Warhol did five TIME covers from 1965 to 1986; Roy Lichtenstein produced two cover images within three weeks of each other in 1968. In 1965 and 1976, respectively, Marc Chagall and Robert Rauschenberg produced self-portraits to accompany cover stories about their work. Buy a print of the TIME 100th Anniversary Centennial cover here [...] In 1978, the magazine donated 800 works of original cover art to the National Portrait Gallery, which has preserved and digitized that history. The collection now includes more than 2,000 pieces. These covers are noteworthy on their merits, but several among them turned out not simply to record news, but also to make it. TIME covers have affected government policy and individual actions, challenged public opinion, and launched careers.