The Warmth of Other Suns: The Epic Story of America's Great Migration

by Isabel Wilkerson

The Great Migration in particular was not a seasonal, contained, or singular event. It was a statistically measurable demographic phenomenon marked by unabated outflows of black émigrés that lasted roughly from 1915 to 1975. It peaked during the war years, swept a good portion of all the black people alive in the United States at the time into a river that carried them to all points north and west. Like other mass migrations, it was not a haphazard unfurling of lost souls but a calculable and fairly ordered resettlement of people along the most direct route to what they perceived as freedom, based on railroad and bus lines. The migration streams were so predictable that by the end of the Migration, and, to a lesser degree, even now, one can tell where a black northerner’s family was from just by the city the person grew up in—a good portion of blacks in Detroit, for instance, having roots in Tennessee, Alabama, western Georgia, or the Florida panhandle because the historic rail lines connected those places during the Migration years.