The history of the Greatest Africa Gallery in California goes back a long way. It was founded in the 1960s by Peter Schwarz who then left the United States to teach in a technical high school in Bamako (Mali), to discover that a sedentary life was not for him. In order to satisfy his thirst for travel and his ardent interest in the bush (the English colonial term for wilderness) where intriguing objects then called "primitive art" were still made by little-known ethnic groups living in...