For information on the New York Stock Exchange, see:
Information on Alcoa and aluminum prices is found in:
http://www.world-aluminium.org/About+IAI/Members
http://www.infomine.com/investment/historicalcharts/
Information on the taxi market and the price of a taxi medallion in New York, Boston, and Chicago is found in:
http://www.huffingtonpost.com/2009/08/06/cost-of-nyc-taxi-medallio_n_252655.html
http://mjperry.blogspot.com/2009/12/update-on-nyc-taxi-cartel.html
http://www.titanicdeckchairs.com/2008/06/bostons-medallion-morass.html
For a discussion of the economic effects of an import tariff, see:
http://economics.about.com/cs/taxpolicy/a/tariffs_2.htm
Data on exchange rates between any two currencies can be obtained by clicking on "currencies" and "currency calculator" on the Bloomberg website at:
The monthly trade-weighted exchange rate of the dollar can be obtained from the Federal Reserve Bank of St. Louis website at:
http://research.stlouisfed.org/fred2/categories/105
For comparative advertising, see: