Hartman Center for Sales, Advertising & Marketing History, Duke University]]> Billboard Poster]]> 1930s]]> After World War I (1920-1930)]]> Thirties]]> The Depression Era (1929-1940)]]> World War II (1939-1945)]]> Billboard Poster]]> 1930s]]> Thirties]]> The Depression Era (1929-1940)]]> World War II (1939-1945)]]> After World War I (1920-1930)]]> Hartman Center for Sales, Advertising & Marketing History, Duke University]]> Billboard Poster]]> The Cold War Era (1945-1990)]]> Sixties]]> Twenties]]> The Depression Era (1929-1940)]]> Modern Civil Rights Era (1950-1970)]]> Fifties]]> Forties]]> After World War I (1920-1930)]]> 1960s]]> 1950s]]> 1940s]]> 1930s]]> 1920s ]]> Vietnam War Era (1960-1975)]]> World War II (1939-1945)]]> Hartman Center for Sales, Advertising & Marketing History, Duke University]]> Billboard Poster]]> 1920s ]]> The Depression Era (1929-1940)]]> After World War I (1920-1930)]]> Twenties]]> Hartman Center for Sales, Advertising & Marketing History, Duke University]]> Billboard Poster]]> 1920s ]]> After World War I (1920-1930)]]> Twenties]]> The Depression Era (1929-1940)]]> Magazine ad]]> Magazine ad]]> Magazine ad]]> Newspaper ad]]> Newspaper ad]]> Magazine ad]]> Magazine ad]]>