A 2004 issue of The New Yorker magazine that ran photographs of former U.S. President Jimmy Carter, left, and then Sen. Barack Obama are shown on display during the media preview of the Richard Avedon Photographs 1946-2004 exhibition at the San Francisco Museum of Modern Art on Wednesday, July 8, 2009, in San Francisco. The exhibition will run from July 11 through Nov. 29, at the San Francisco Museum of Modern Art, which is the only U.S. venue for the retrospective featuring over 200 photographs. AP Photo logo AP Photo 7 months ago

A 2004 issue of The New Yorker magazine that ran photographs of former U.S. President Jimmy Carter, left, and then Sen. Barack Obama are shown on display during the media preview of the Richard Avedon Photographs 1946-2004 exhibition at the San Francisco Museum of Modern Art on Wednesday, July 8, 2009, in San Francisco. The exhibition will run from July 11 through Nov. 29, at the San Francisco Museum of Modern Art, which is the only U.S. venue for the retrospective featuring over 200 photographs.