Sotheby's Collection Marc et Denyse Ginzberg: Afrique, L'Art Des Formes, Paris, 10 September 2007 (oversize TPB, mostly in French, $8, which is 1/3 the internet price.)
African art has long been known to influence Western Art, but not until more recently was the beauty of practical objects seen as art. The Ginzberg Art Forms collection shows how utilitarian objects can reveal the imagination and creativity of their makers.
Look for this book in the art section.