Primary Source Lessons for U.S. History (1880s to Recent History) Progressive Era, Imperialism, and the Nadir of American Race Relations (1880s to 1920s) Political History Labor History History of Immigration, Class, and Racism Memory of Antebellum South Women’s History Military History-Imperialism Native American History Environmental-Science History World War I(1914-1918) Miscellaneous World War I The Great Depression (1929 to 1941) Labor History Environmental-Agricultural History Civil Rights Movement World War II Era(1939-1949) Miscellaneous World War II
