http://ntu.org/tax-basics/history-of-federal-individual-1.html - Top and bottom national tax brackets from 1913 https://en.m.wikipedia.org/wiki/Federal_income_tax_rates_of_the_United_States_by_year http://www.bls.gov/cps/prev_yrs.htm - Bureau of Labor Statistics unemployment rates 1948 - 2011 http://www.nyse.tv/dow-jones-industrial-average-history-djia.htm - Dow Jones Industrial Average from 1900 - 2011 http://www.treasurydirect.gov/govt/reports/pd/histdebt/histdebt_histo4.htm - National debt outstanding 1950 - 1999 http://www.treasurydirect.gov/govt/reports/pd/histdebt/histdebt_histo5.htm - National debt outstanding 1999 - 2010 http://www.davemanuel.com/history-of-debt-in-the-united-states.php - National debt back to 1789 http://en.wikipedia.org/wiki/Apollo_11 - Apollo 11 launched July 16, 1969 http://en.wikipedia.org/wiki/Who_shot_J._R.%3F - Kristen Shepar...