2. The art of the Yoruba

3. Dayton Art Institute

4. http://www.stlouis.art.museum/fi les/artofafrica/files/fieldphoto_1 2.html Young Yoruba woman carrying a twin figure Detail of photograph by William Fagg, courtesy of the Royal Anthropological Institute Photographic Collection, London

5. Saint Louis Art Museum

6. http://www.stlouis.art.museum/files/artofafrica/files/fieldphoto_12.html Twin figures in a family shrine Photograph by Marilyn Hammersley Houlberg

7. Smithsonian Institution

8. http://www.ackland.org/art/collection/african/97.1.jpg Ackland Art Museum, U. of N. Carolina, Chapel Hill

9. http://collectionsonline.lacma.org/mwebcgi/mweb.exe?request=record;id=95287;type=101 Lacma

10. http://africa.si.edu/collections/rsdadvnNav.asp?BrowseMode=3&offset=18 Smithsonian Institution

11. http://www.britishmuseum.org/explore/highlights/highlight_image.aspx?image=mm040159.jpg&retpage=15793 British Museum

12. http://www.britishmuseum.org/explore/highlights/highlight_image.aspx?image=mm029127.jpg&retpage=16006 British Museum

13. The art of the Luba

17. http://dmaconnect.org/CONNECT/print/dma_406384?id=4055865