Patricia Hayes and Gary Minkley (eds), Ambivalent: Photography and Visibility in African History (Athens, OH: Ohio University Press, 2019), 376 Pp, Paper Back: 978- 0-8214-2394-3, Hardcover: 978-0-8214-2393-6, Electronic: 978-0-8214-4688-1. KRONOS 2021, 46 (1).