In 1935 the groundbreaking “African Negro Art” exhibition was organized by New York’s Museum of Modern Art. It was one of the first exhibitions in the United States to display African sculptures as works of art, rather than as ethnographic objects. A reader just informed me MoMa has made their archives of this show available online – you can find them here. Besides the integral version of the exhibition’s catalogue edited by James J. Sweeney, you can also browse the checklist of all 603 displayed objects here. The site as well includes several wonderful installation shot – most of these objects now are rightfully considered as icons of African art and collectors are prepared to pay a considerable premium to own a piece with such a historic provenance.