Bowling, Beatniks, And Bell-Bottoms: Pop Culture Of 20th- And 21st-Century America, 2nd ed., covers the popular culture of the 20th and 21st centuries. The set is organized chronologically by decade. For each decade, there is a general overview entry that covers the defining events of the time period as well as some brief "At a Glance" facts. There are also topic overviews for each decade that provide a brief historical background on what was going on in that area during that decade.