The Great Migration had a profound impact on the history of the United States in the 20th century. Between 1910 and 1970, six and one half million African-Americans migrated from the South to northern cities, pushed by the hardships of their rural homelands and pulled by the job and educational opportunities of the urban North. Noted historian Mitch Yamasaki's anthology introduces their story through letters, essays, government documents, photographs, literature, and news accounts.