That is the new and much awaited book by Gavin Wright, with the subtitle The Economics of the Civil Rights Revolution in the American South. Here is one small bit, reflecting some of the book’s main themes:
By the 1930s, labor markets in the South had come to display a distinct “racial wage gap,” supported by systems of vertical workplace segregation. Not only were job categories classified by race, but black wage rates typically peaked about where white pay grades began. These structures persisted through World War II and the 1950s, showing few signs of softening even in the presence of rapid urbanization and industrial employment growth.