This one caught my eye, but there are more interesting exhibits there concurrently...
Click on the link to see a few photos.. (I can't seem to link the images here.)
Click on Exhibitions to see what else is showing now.
Street Life: American Photographs from the 1960s and 70s
Through April 20, 2008
Lower Level, Wieland Pavilion
This permanent collection exhibition features photographs by Garry Winogrand, Danny Lyon, Susan Meiselas, and Dennis Carlyle Darling made in America in the 1960s and 1970s. Each body of work examines social groups living on the fringes of mainstream culture during the critical decades in American history that witnessed the Women's Liberation Movement, anti-Vietnam War demonstrations, and the emergence of the American counterculture.