1930's By nwest0728 Jan 1, 1930 Americans own more than 23 million cars Jan 1, 1930 Dust stroms ruin forms in the Great Plains Jan 1, 1931 Ford shuts down Detroit Factories Jan 1, 1931 Number of homeless people in NYC about 15,00 Jan 1, 1931 Empire State Building Opens Jun 1, 1931 Al Capone convicted of tax evasion. Jan 1, 1932 1/4 of workers un-employed Jan 1, 1932 56% African Americans un-employed Jan 1, 1933 9 million savings accounts wiped clean out Jan 1, 1933 Former President Coolidge dies