You can search BOOK REVIEWS on google, in newspapers, in disciple specific journals, etc.
Often starting with JSTOR is a good start.
Murphy, Maureen. “John Warne Monroe, Metropolitan Fetish: African Sculpture and the Imperial French Invention of Primitive Art.” The Journal of Modern History, vol. 92, no. 4, Nov. 2020, pp. 949–50
Magee, Carol. African Arts 44, no. 4 (2011): 93-94. There are many reasons to recommend Kathleen Bickford Berzock's and Christa Clarke's edited volume, Representing Africa in American Art Museums…