Early in 1929, the American boom still knows no bounds. But on October 24, 1929, Wall Street sees the biggest crash ever recorded. We show footage and a dramatic voiceover from just days after "Black Thursday." John D. Rockefeller records a message for those left in despair by the crash. J.P. Morgan, Jr. is summoned to testify before a Senate committee. In the midst of the Great Depression, the Rockefeller family builds the Rockefeller Center as a statement of confidence in the economy. Our images track the rise and fall of the American economic juggernaut in the 1920s and 30s.