This is the third volume in the Hanford History Series from WSU Press. Whereas the first two volumes examined the Manhattan Project and its impact on Hanford, White Bluffs, and Richland, this volume expands the scope to include the broader Tri-Cities region and the social changes that have shaped it. The authors make great use of oral histories, and they deserve much credit for amplifying Native American, Japanese American, and African American voices. This also makes the book’s exclusion of Mexican American voices all the more surprising.The book’s overarching thesis, developed by four authors across six chapters, is straightforward: social diversity, racial conflict, wartime displacement, and civil rights activism shaped the Tri-Cities region from the 1880s to the 1970s, and World War II was the turning point. With less consistency, the authors argue that white residents’ treatment of Plateau Indians and successive waves of Chinese, Japanese, and African American newcomers followed the same patterns of discrimination and segregation, the “echoes of exclusion” that fueled resistance.Thomas Marceau’s opening chapter explores the centrality of the region’s natural resources to the Wanapum people and thus the travesty of the tribe’s displacement from the Hanford Site in 1943. Robert Bauman’s chapter backtracks to survey the racist treatment that Chinese immigrants faced during the late nineteenth century before focusing on Japanese immigrants, their survival strategies, and the injustices that internment policy brought to their doorsteps. The next three chapters turn to African Americans. Robert Franklin examines the wartime opportunities that African Americans perceived and the realities of discrimination and segregation they faced. Laura Arata focuses more tightly on African American women and the “optimism, disappointment, and determination that shaped their experiences” (p. 114). Bauman and Franklin then analyze the region’s civil rights movement, including its courageous leaders, committed opponents, and mixed results. Each of these chapters has much to offer, especially for students of Washington state history. The book as a whole presents a compelling mix of material on racial conflict and the perseverance needed to overcome it.The book also reflects some conceptual shortcomings. Lumping Plateau Indians, Chinese immigrants, Japanese Americans, African Americans, and ethnic Mexicans together as “nonwhites” is problematic. It illuminates patterns, but it says more about white residents’ misguided conflation of tribal, national, racial, ethnic, and immigrant identities. More problematic is the decision to relegate the experiences of ethnic Mexicans to five pages of the final chapter. Their recognition that the history of Latinas/os in the region deserves its own book offers some solace. I eagerly await the fourth volume in this series.