Balance of Payments
Information from the N.Y. Fed on the components of the balance of payments.

TradePort
This site provides an extensive amount of information for firms that are interested in becoming involved in international trade.

David Ricardo
This page contains links to sites that provide information about David Ricardo, the original developer of the theory of comparative advantage.

U.S. Foreign Trade Statistics
The Census Bureau's detailed statistics on foreign trade can be found at this site.

Current exchange rate information
Links to online sources of exchange rate information are provided here.