Twelve historical black newspapers: Atlanta Daily World (1931-2010); Baltimore Afro-American (1893-2010); Chicago Defender (1910-2010); Cleveland Call and Post (1934-2010); Kansas City Call, (1919-2010); Louisville Defender, (1951-2010); Michigan Chronicle (1939-2010); New York Amsterdam News (1922-2010); Norfolk Journal & Guide (1916-2010); Philadelphia Tribune (1912-2010); Pittsburgh Courier (1911-2010); and Los Angeles Sentinel (1934-2010)