Great Lakes St. Lawrence Seaway System
http://www.greatlakes-seaway.com/

The Great Lakes and St. Lawrence Cities Initiative (GLSLCI)
http://www.glslcities.org/

Great Lakes Information Network
http://www.great-lakes.net/

Great Lakes Environmental Research Laboratory
http://www.glerl.noaa.gov/

EPA Great Lakes Ecosystem
http://www.epa.gov/ecopage/

International Association of Great Lakes Research
http://www.iaglr.org/

American Great Lakes Ports Association
http://www.greatlakesports.org/