The document provides historical context and images from 1920-1929 in the United States. It describes the 1920 Wall Street bombing that killed 38 people, injured 400, and led to increased investigation of radical groups. It also contains photos from the early 1920s showing things like the Lincoln Memorial dedication, bathing suit contests, moonshine stills, and the Indianapolis 500. Later photos show Charles Lindbergh's transatlantic flight, Al Capone orchestrating the 1929 Valentine's Day Massacre, and the start of the stock market crash on Wall Street in 1929.