Mary Ballard, left, a senior textile conservator from the Smithsonian Museum Conservations Institute, instructs Patricia Heaston on the proper way to store a Pullman Porter hat at the Harold Washington Library in Chicago, Saturday, Jan. 19, 2008. Librarians from the Chicago Public Library and experts from the Smithsonian's National Museum of African American History and Culture examined the historical items from more than 130 individuals as part of a program called "Save our African American Treasures." (AP Photo/Brian Kersey)

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