U.S. Embassy in Warsaw, Poland:
http://warsaw.usembassy.gov
U.S. Department of Commerce:
http://www.doc.gov
U.S. Department of State:
http://www.state.gov
Office of Agricultural Affairs, U.S. Embassy Warsaw
http://warsaw.usembassy.gov/poland/agric.html
American Chamber of Commerce in Warsaw, Poland
http://www.amcham.com.pl
European Bank for Reconstruction and Development
U.S. Commercial Service Liaison Office
http://www.buyusa.gov/ebrd/
U.S. Export-Import Bank
http://www.exim.gov
The Polish Government sites:
Polish Information and Foreign Investment Agency
The Polish Securities and Exchange Commision
The National Broadcasting Council
National Fund of Environmental Protection and Water Management
Embassy of the Republic of Poland, Economic and Commercial Department, New York
The Ministries:
Ministry of Economy, Ministry of Regional Development
Ministry of Education and Sports
Ministry of Culture and National Heritage
Ministry of Agriculture and Rural Development
Ministry of Internal Affairs and Administration
Ministry of Scientific Research and Information Technology
Ministry of Environmental Protection
Others:
PolandBusinessNetwork.pl Poland's Business Portal for Foreign Investors and Resident Business Expatriates
Expo XXI Warsaw International Expocenter
Międzynarodowe Targi Polska, organizer of large trade fairs in Warsaw.