Hartman Center for Sales, Advertising & Marketing History, Duke University]]> Billboard Poster]]> Sixties]]> Fifties]]> Forties]]> Modern Civil Rights Era (1950-1970)]]> The Cold War Era (1945-1990)]]> 1960s]]> 1950s]]> 1940s]]> 1930s]]> Thirties]]> Vietnam War Era (1960-1975)]]> World War II (1939-1945)]]> The Depression Era (1929-1940)]]>