You can have this excellent reference book on your smart phone for just $9.97. The pictures look just as good as the printed book. Here is a Mbangu mask from the Pende people of the Democratic Republic of Congo. It represents a hunter who has suffered a stroke from the curse of a sorcerer. Collectors call this a sickness or deformity mask. It is on page 17 of Masks of the World by Ibold & Yohn. You can buy the digital version here on the website or by going directly to Amazon.com. What a wonderful source of info when at an auction, thrift store, tourist shop, etc!