EditorialHelmet Mask, before 1880, Cameroon, Grassfields region, Bamum kingdom, Wood, copper, glass beads, raffia, cowrie shells, H. 26 x W. 14 x D. 10 3/4 in. (66 x 35.6 x 27.3 cm), Beads-Sculpture, In the socially and politically stratified polities of the Gr...