WASHINGTON, July 21 -- The National Gallery of Art issued the following news release: * * * First-of-Its-Kind Exhibition Opening at the National Gallery of Art Explores Photography's Role in the Black Arts Movement Never-before-seen photographs alongside images of cultural icons reveal the medium's central role during a pivotal era of creative expression * The National Gallery of Art presents Photography and the Black Arts Movement, 1955-1985, an exhibition exploring the work of American an  more