Here are some links we think may be useful for you:

Google Maps

Freightgate Logistics Portal

International Calling Codes

International Currency Converter

Harmonized Tariff Schedule

Department of Commerce

International Trade Administration

Bureau of Industry and Security

Food and Drug Administration

Schedule B Codes

Chambers of Commerce

Department of State

World Time and Date

World Airport Codes

World Zip and Postal Codes

The World Factbook

International Trade Data System

Export Administration Regulations

NAFTA NOW

U.S. Customs and Border Protection

Transportation Security Administration

Flight Delay Information